@article{10_21136_AM_1987_104236,
     author = {Jankovsk\'y, Zden\v{e}k and \v{S}ejdl, Miroslav},
     title = {Zur \"aquiformen {Geometrie} in der {Ebene}},
     journal = {Applications of Mathematics},
     pages = {57--62},
     publisher = {mathdoc},
     volume = {32},
     number = {1},
     year = {1987},
     doi = {10.21136/AM.1987.104236},
     mrnumber = {0879330},
     zbl = {0616.53013},
     language = {ge},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/AM.1987.104236/}
}