Spectrum preserving lower triangular completions -- the nonnegative nilpotent case. Berman, Abraham; Krupnik, Mark — 1997 ELA. The Electronic Journal of Linear Algebra [electronic only]
On Tucker's key theorem. Berman, Abraham; Tarsy, Michael — 1978 International Journal of Mathematics and Mathematical Sciences
Proceedings of the 2004 workshop on nonnegative matrices, Maynooth, Ireland, July 11--14, 2004. Berman, Abraham (ed.); Laffey, Thomas J. (ed.) — 2005 ELA. The Electronic Journal of Linear Algebra [electronic only]
Sign patterns that allow eventual positivity. Berman, Abraham; Catral, Minerva; Dealba, Luz Maria; Elhashash, Abed; Hall, Frank J.; Hogben, Leslie; Kim, In-Jae; Olesky, Dale D.; Tarazaga, Pablo; Tsatsomeros, Michael J.; van den Driessche, Pauline — 2009 ELA. The Electronic Journal of Linear Algebra [electronic only]