@article{10_21136_CPM_1990_118415,
     author = {Schwabik, \v{S}tefan},
     title = {The {Perron} product integral and generalized linear differential equations},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {368--404},
     publisher = {mathdoc},
     volume = {115},
     number = {4},
     year = {1990},
     doi = {10.21136/CPM.1990.118415},
     mrnumber = {1090861},
     zbl = {0724.26006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1990.118415/}
}