TY - JOUR AU - R. Sikorski TI - On MikusiƄski's algebraical theory of differential equations JO - Studia Mathematica PY - 1957 SP - 230 EP - 236 VL - 16 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/sm-16-2-230-236/ DO - 10.4064/sm-16-2-230-236 LA - en ID - 10_4064_sm_16_2_230_236 ER -