TY - JOUR AU - Su, Hua AU - Wang, Baohe AU - Wei, Zhongli TI - Positive solutions of four-point boundary-value problems for four-order $p$-Laplacian dynamic equations on time scales JO - Electronic Journal of Differential Equations PY - 2006 VL - 2006 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/EJDE_2006__2006__a10/ LA - en ID - EJDE_2006__2006__a10 ER -