@article{ARM_1990__26_1_a3,
     author = {\v{C}adek, Martin},
     title = {A note to pointwise transformations of linear quasi-differential equations},
     journal = {Archivum mathematicum},
     pages = {27--35},
     publisher = {mathdoc},
     volume = {26},
     number = {1},
     year = {1990},
     mrnumber = {1188071},
     zbl = {0731.34007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1990__26_1_a3/}
}