מורגנשטרן משה

Morgenstern, M (1994). Existence and explicit constructions of q+ 1 regular Ramanujan graphs for every prime power q. Journal of Combinatorial Theory, 62(1), 44-62. https://doi.org/10.1006/jctb.1994.1054

Morgenstern, M (1994). Ramanujan diagrams. SIAM Journal on Discrete Mathematics, 7(4), 560-570. https://doi.org/10.1137/S0895480192235325

Morgenstern, M (1995). Natural bounded concentrators. Combinatorica, 15, 111-122. https://doi.org/10.1007/BF01294463