TY  - JOUR
AU  - Ostrom, T. G.
TI  - Derivable Nets1)
JO  - Canadian mathematical bulletin
PY  - 1965
SP  - 601
EP  - 613
VL  - 8
IS  - 5
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-1965-043-1/
DO  - 10.4153/CMB-1965-043-1
ID  - 10_4153_CMB_1965_043_1
ER  -