TY  - JOUR
AU  - Havel, Václav
TI  - On semichained refinements of chains in equivalence lattice. (A note to a theorem of O. Borůvka.)
JO  - Czechoslovak Mathematical Journal
PY  - 1963
SP  - 533
EP  - 538
VL  - 13
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1963.100584/
DO  - 10.21136/CMJ.1963.100584
LA  - en
ID  - 10_21136_CMJ_1963_100584
ER  -