TY - JOUR AU - McDaniel, Wayne L. TI - Representations of every integer as the difference of nonsquare powerful numbers JO - Portugaliae mathematica PY - 1987 SP - 69 EP - 75 VL - 44 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PORMA_1987__44_1_115570/ LA - en ID - PORMA_1987__44_1_115570 ER -