TY - JOUR AU - Říha, Stanislav TI - Hamiltonian lines in the square of graphs. I. Hamiltonian circuits in the square of cacti JO - Archivum mathematicum PY - 1988 SP - 45 EP - 56 VL - 24 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ARM_1988__24_2_a0/ LA - en ID - ARM_1988__24_2_a0 ER -