Camillo, V.P. and Nicholson, W. Keith. "Quasi-morphic rings". Journal of Algebra and its Applications 6. (2007): 789-799. Print.
Nicholson, W. Keith and Y. Zhou. "Semiregular morphisms". Comm. in Algebra 34. (2006): 219-233. Print.
Camillo, V.P., Khurana, D., Lam, T.Y., Nicholson, W. Keith and Zhou, Y.. "Continuous modules are clean". Journal of Algebra 304. (2006): 94-111. Print.
Nicholson, W. Keith and Zhou, Y.. "Clean rings: A survey". Advances in Ring Theory, Proceedings of the Fourth China-Japan-Korea International Conference, World Scientific, 167-180, (2004): 181-198. Print.
Nicholson, W. Keith, Yousif, M.F. and Yousif, Mohammed. "On quasi-Frobenius rings". , , Cambridge University Press, (2003): xviii+307. Print.
Nicholson, W. Keith, Park, Jae, Yousif, M.F. and Yousif, Mohammed. "On simple-injective rings". Algebra Colloquium 9.3 Cambridge University Press, (2002): 259-264. Print.
Nicholson, W. Keith, Yousif, M.F. and Yousif, Mohammed. "Weakly continuous and C2-rings". Communications in Algebra 29. (2001): 2429-2446. Print.
Han, Juncheol and Nicholson, W. Keith. "Extensions of clean rings". Communications in Algebra 29.6 Cambridge University Press, (2001): 2589-2595. Print.
Nicholson, W. Keith, Yousif, M.F. and Yousif, Mohammed. "FP-rings". Communications in Algebra 29. Cambridge University Press, (2001): 415-425. Print.
Nicholson, W. Keith, Yousif, M.F. and Yousif, Mohammed. "C2-rings and the FGF-conjecture". , 273. Amer. Math. Soc., (2001): 245-251. Print.
Nicholson, W. Keith, Yousif, M.F. and Yousif, Mohammed. "On finitely embedded rings". Communications in Algebra 28.11 Cambridge University Press, (2000): 5311-5315. Print.
Park, Jae, Nicholson, W. Keith, Yousif, M.F. and Yousif, Mohammed. "On extensions of simple-injective rings". Communications in Algebra 28.10 Cambridge University Press, (2000): 4665-4675. Print.
Ara, Pere, Nicholson, W. Keith, Yousif, M.F. and Yousif, Mohammed. "A look at the Faith conjecture". Glasgow Mathematical Journal 42. Cambridge University Press, (2000): 391-404. Print.
Camillo, V., Nicholson, W. Keith, Yousif, M.F. and Yousif, Mohammed. "Ikeda-Nakayama rings". Journal of Algebra 226. (2000): 1001-1010. Print.
Han, Juncheol and Nicholson, W. Keith. "Notes on clean rings". , (1999): 23-32. Print.
Nicholson, W. Keith, Park, J. K., Yousif, M.F. and Yousif, Mohammed. "Principally quasi-injective modules". Communications in Algebra 27.4 John Wiley & Sons Inc., (1999): 1683-1693. Print.
Nicholson, W. Keith, Yousif, M.F. and Yousif, Mohammed. "Annihilators and the CS-condition". Glasgow Mathematical Journal 40. John Wiley & Sons Inc., (1998): 213-222. Print.
Nicholson, W. Keith, Yousif, M.F. and Yousif, Mohammed. "On perfect simple-injective rings". Proc. Amer. Math. Soc. 125.4 (1997): 979-985. Print.
Fuller, K. R., Nicholson, W. Keith and Watters, J. F.. "On k-reflexive representations of algebras". Proc. Amer. Math. Soc. 125.1 John Wiley & Sons Inc., (1997): 47-50. Print.
Nicholson, W. Keith. "On exchange rings". Communications in Algebra 25.6 John Wiley & Sons Inc., (1997): 1917-1918. Print.
Nicholson, W. Keith. "Very semisimple modules". The American Mathematical Monthly 104.2 John Wiley & Sons Inc., (1997): 159-162. Print.
Nicholson, W. Keith, Yousif, M.F. and Yousif, Mohammed. "Mininjective rings". Journal of Algebra 187.2 John Wiley & Sons Inc., (1997): 548-578. Print.
Fuller, K. R., Nicholson, W. Keith and Watters, J. F.. "Direct sums of reflexive modules". Linear Algebra and its Applications 239. John Wiley & Sons Inc., (1996): 201-214. Print.
Nicholson, W. Keith and Yousif, M.F.. "On a theorem of Camillo". Communications in Algebra 23. (1995): 5309-5314. Print.
Fuller, K. R., Nicholson, W. Keith and Watters, J. F.. "Algebras whose projective modules are reflexive". Journal of Pure and Applied Algebra 98.2 John Wiley & Sons Inc., (1995): 135-150. Print.
Nicholson, W. Keith and Varadarajan, Kalathoor. "Endomorphisms and global dimension". Acta Mathematica Hungarica 67.1-2 (1995): 93-96. Print.
Nicholson, W. Keith and Varadarajan, Kalathoor. "Complement preserving operators". Periodica Mathematica Hungarica. Journal of the J\'anos Bolyai Mathematical Society 30.3 (1995): 225-232. Print.
Nicholson, W. Keith, Yousif, M.F. and Yousif, Mohammed. "Principally injective rings". Journal of Algebra 174.1 (1995): 77-93. Print.
Nicholson, W. Keith, Yousif, M.F. and Yousif, Mohammed. "On quasi-continuous rings". Proc. Amer. Math. Soc. 120.4 John Wiley & Sons Inc., (1994): 1049-1051. Print.
Nicholson, W. Keith, Yousif, M.F. and Yousif, Mohammed. "Continuous rings with chain conditions". Journal of Pure and Applied Algebra 97.3 John Wiley & Sons Inc., (1994): 325-332. Print.
Nicholson, W. Keith, Yousif, M.F. and Yousif, Mohammed. "On completely principally injective rings". Bulletin of the Australian Mathematical Society 49.3 John Wiley & Sons Inc., (1994): 513-518. Print.
Nicholson, W. Keith. "On PP-endomorphism rings". Canadian Mathematical Bulletin. Bulletin Canadien de Math\'ematiques 36.2 John Wiley & Sons Inc., (1993): 227-230. Print.
Nicholson, W. Keith. "On PP-rings". Periodica Mathematica Hungarica. Journal of the J\'anos Bolyai Mathematical Society 27.2 John Wiley & Sons Inc., (1993): 85-88. Print.
Fuller, K. R., Nicholson, W. Keith and Watters, J. F.. "Universally reflexive algebras". Linear Algebra and its Applications 157. John Wiley & Sons Inc., (1991): 195-201. Print.
Nicholson, W. Keith. "On Faith's correspondence theorem". Periodica Mathematica Hungarica. Journal of the Janos Bolyai Mathematical Society 21.1 John Wiley & Sons Inc., (1990): 31-34. Print.
Fraser, J. A. and Nicholson, W. Keith. "Reduced PP-rings". Mathematica Japonica 34.5 (1989): 715-725. Print.
Nicholson, W. Keith and Watters, J. F.. "Morita context functors". Mathematical Proceedings of the Cambridge Philosophical Society 103.3 John Wiley & Sons Inc., (1988): 399-408. Print.
Nicholson, W. Keith and Watters, J. F.. "Exact modules". Archiv der Mathematik 51.5 (1988): 412-418. Print.
Nicholson, W. Keith. "The dual of a theorem of Goldman". Periodica Mathematica Hungarica. Journal of the Janos Bolyai Mathematical Society 19.3 (1988): 235-239. Print.
Desale, G. and Nicholson, W. Keith. "Endoprimitive rings". Journal of Algebra 70.2 (1981): 548-560. Print.
Nicholson, W. Keith and Yaqub, Adil. "A commutativity theorem". Algebra Universalis 10.2 (1980): 260-263. Print.
Nicholson, W. Keith, Watters, J. F. and Zelmanowitz, J. M.. "On extensions of weakly primitive rings". Canadian Journal of Mathematics. 32.4 (1980): 937-944. Print.
Nicholson, W. Keith and Watters, J. F.. "The strongly prime radical". Proc. Amer. Math. Soc. 76.2 (1979): 235-240. Print.