TY  - JOUR
AU  - Amara, Jamel Ben
TI  - Comparison Theorem for Conjugate Points of a Fourth-order Linear Differential Equation
JO  - Canadian mathematical bulletin
PY  - 2013
SP  - 39
EP  - 43
VL  - 56
IS  - 1
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-2011-159-6/
DO  - 10.4153/CMB-2011-159-6
ID  - 10_4153_CMB_2011_159_6
ER  -