TY - JOUR AU - Nebeský, Ladislav TI - Signpost systems and spanning trees of graphs JO - Czechoslovak Mathematical Journal PY - 2006 SP - 885 EP - 893 VL - 56 IS - 3 PB - mathdoc UR - https://geodesic-test.mathdoc.fr/item/CMJ_2006__56_3_a6/ LA - en ID - CMJ_2006__56_3_a6 ER -