A Note on Multiplying Boolean Matrices II CACM January, 1964 Comstock, D. R. CA640103 JB March 10, 1978 5:38 AM 1151 4 1151 1265 4 1151 2769 4 1151 1151 5 1151 1151 5 1151 1151 5 1151 635 5 1151