TY  - JOUR
AU  - Steffens, K.
TI  - Matchings in Countable Graphs
JO  - Canadian journal of mathematics
PY  - 1977
SP  - 165
EP  - 168
VL  - 29
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1977-016-8/
DO  - 10.4153/CJM-1977-016-8
ID  - 10_4153_CJM_1977_016_8
ER  -