@article{10_21136_CPM_1977_117955,
     author = {Burda, Pavel},
     title = {Isomorphism of projective planes and isotopism of planar ternary rings},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {173--178},
     year = {1977},
     volume = {102},
     number = {2},
     doi = {10.21136/CPM.1977.117955},
     mrnumber = {0500489},
     zbl = {0348.50014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1977.117955/}
}