TY - JOUR AU - Goodrich, Christopher S. TI - Existence of a positive solution to a nonlocal semipositone boundary value problem on a time scale JO - Commentationes Mathematicae Universitatis Carolinae PY - 2013 SP - 509 EP - 525 VL - 54 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_2013__54_4_a4/ LA - en ID - CMUC_2013__54_4_a4 ER -