@article{10_21136_MB_1994_126164,
     author = {Ma\v{r}{\'\i}k, Jan},
     title = {Integrating factor},
     journal = {Mathematica Bohemica},
     pages = {225--229},
     publisher = {mathdoc},
     volume = {119},
     number = {3},
     year = {1994},
     doi = {10.21136/MB.1994.126164},
     mrnumber = {1305525},
     zbl = {0814.34002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.1994.126164/}
}