@article{10_21136_CPM_1970_117699,
     author = {Barto\v{s}, Pavel},
     title = {O prolongabiln\'ych rie\v{s}eniach optickej rovnice},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {278--289},
     publisher = {mathdoc},
     volume = {095},
     number = {3},
     year = {1970},
     doi = {10.21136/CPM.1970.117699},
     mrnumber = {0272708},
     zbl = {0209.07903},
     language = {sk},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1970.117699/}
}