@article{10_21136_CMJ_1987_102191,
     author = {Jarn{\'\i}k, Ji\v{r}{\'\i} and Kurzweil, Jaroslav},
     title = {A general form of the product integral and linear ordinary differential equations},
     journal = {Czechoslovak Mathematical Journal},
     pages = {642--659},
     publisher = {mathdoc},
     volume = {37},
     number = {4},
     year = {1987},
     doi = {10.21136/CMJ.1987.102191},
     mrnumber = {913996},
     zbl = {0642.26004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1987.102191/}
}