TY - JOUR AU - Janusz Traple TI - Boundary value problem for differential and difference second order systems JO - Annales Polonici Mathematici PY - 1977 SP - 167 EP - 186 VL - 35 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.4064/ap-35-2-167-186/ DO - 10.4064/ap-35-2-167-186 LA - en ID - 10_4064_ap_35_2_167_186 ER -