TY - JOUR AU - CHARLES H. FRANKE TI - A Characterization of Linear Difference Equations Which are Solvable by Elementary Operations (Short Communication) JO - Aequationes mathematicae PY - 1973 SP - 312 EP - 312 VL - 9 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AM2_1973__9_136376/ ID - AM2_1973__9_136376 ER -