TY - JOUR AU - R. Ch. Kulaev TI - Disconjugacy of fourth-order equations on graphs JO - Sbornik. Mathematics PY - 2015 SP - 1731 EP - 1770 VL - 206 IS - 12 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SM_2015_206_12_a4/ LA - en ID - SM_2015_206_12_a4 ER -