TY  - JOUR
AU  - D. de Werra
TI  - Partitions of Graphs into Coverings and Hypergraphs into Transversals
JO  - Commentarii mathematici Helvetici
PY  - 1974
SP  - 175
EP  - 178
VL  - 49
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMH_1974__49_139577/
ID  - CMH_1974__49_139577
ER  -