TY  - JOUR
AU  - Zelinka, Bohdan
TI  - Graphs in which each pair of vertices has exactly two common neighbours
JO  - Mathematica Bohemica
PY  - 1993
SP  - 163
EP  - 165
VL  - 118
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/MB.1993.126053/
DO  - 10.21136/MB.1993.126053
LA  - en
ID  - 10_21136_MB_1993_126053
ER  -