@article{PMFA_1960_5_6_a7,
     author = {Neruda, J.},
     title = {Historie vzniku elektretu},
     journal = {Pokroky matematiky, fyziky a astronomie},
     pages = {718--728},
     year = {1960},
     volume = {5},
     number = {6},
     language = {cs},
     url = {http://geodesic.mathdoc.fr/item/PMFA_1960_5_6_a7/}
}