TY - JOUR AU - W.N. EVERITT TI - Fourth Order Singular Differential Equations. JO - Mathematische Annalen PY - 1963 SP - 320 EP - 340 VL - 149 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MAN_1963__149_161032/ ID - MAN_1963__149_161032 ER -