@article{10_21136_CMJ_1973_101199,
     author = {Kurzweil, Jaroslav},
     title = {On multiplication of {Perron-integrable} functions},
     journal = {Czechoslovak Mathematical Journal},
     pages = {542--566},
     publisher = {mathdoc},
     volume = {23},
     number = {4},
     year = {1973},
     doi = {10.21136/CMJ.1973.101199},
     mrnumber = {0335705},
     zbl = {0269.26007},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/articles/10.21136/CMJ.1973.101199/}
}