TY - JOUR AU - Staněk, Svatoslav TI - A criterion for determining the 2$^nd$ order linear differential equations possessing the central dispersion with the index $n$ equal to $t+\pi$ JO - Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica PY - 1977 SP - 75 EP - 79 VL - 16 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AUPO_1977__16_1_a5/ LA - en ID - AUPO_1977__16_1_a5 ER -