%0 Journal Article %A Goethals, J. M. %A Seidel, J. J. %T Strongly Regular Graphs Derived from Combinatorial Designs %J Canadian journal of mathematics %D 1970 %P 597-614 %V 22 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-067-9/ %R 10.4153/CJM-1970-067-9 %F 10_4153_CJM_1970_067_9