TY  - JOUR
AU  - Bielak, Halina
AU  - Soczewińska, Elżbieta
TI  - Some remarks about digraphs with nonisomorphic $1$- or $2$-neighbourhoods
JO  - Časopis pro pěstování matematiky
PY  - 1983
SP  - 299
EP  - 304
VL  - 108
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CPM.1983.118166/
DO  - 10.21136/CPM.1983.118166
LA  - en
ID  - 10_21136_CPM_1983_118166
ER  -