TY - JOUR AU - Goethals, J. M. AU - Seidel, J. J. TI - Strongly Regular Graphs Derived from Combinatorial Designs JO - Canadian journal of mathematics PY - 1970 SP - 597 EP - 614 VL - 22 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-067-9/ DO - 10.4153/CJM-1970-067-9 ID - 10_4153_CJM_1970_067_9 ER -