TY - JOUR AU - Jarník, Jiří AU - Kurzweil, Jaroslav TI - A general form of the product integral and linear ordinary differential equations JO - Czechoslovak Mathematical Journal PY - 1987 SP - 642 EP - 659 VL - 37 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1987.102191/ DO - 10.21136/CMJ.1987.102191 LA - en ID - 10_21136_CMJ_1987_102191 ER -