[2] GEDEONOVÁ E.:
The orientability of the direct product of graphs. Math. Slovaca 31, 1981, 71-78.
MR 0619508
[3] HARARY F.:
Gгaph Theory. Addison-Wesley, Reading, 1969.
MR 0256911
[4] JAKUBÍK J.:
Weak product decompositions of discrete lattices. Czechoslov. Math. J. 21, 1971, 399-412.
MR 0286723 |
Zbl 0224.06003
[5] JAKUBÍK J.:
Weak product decompositions of partially ordered sets. Colloquium math. 25, 1972, 177-190.
MR 0329977
[6] JAKUBÍK J.:
On weak direct product decompositions of lattices and graphs. Czechoslov. Math. J. 35, 1985, 269-277.
MR 0787129 |
Zbl 0576.06006
[7] JAKUBÍK J.:
Covering graphs and subdirect decompositions of partially ordered sets. Math. Slovaca 36, 1986, 151-162.
MR 0849706 |
Zbl 0603.06001
[8] KLENOVČAN P.: Paths in the covering graphs of partially ordered sets (Slovak). Acta Fac. Paed. Banská Bystrica VII. 1987, 313-329..
[10] KOTZIG A.:
Centrally symmetric graphs (Russian). Czechoslov. Math. J. 18, 1968, 606-615.
MR 0237376
[12] ORE O.: Theoгy of Graphs. Amer. Math. Society, Coll. Publ. 1962.