@article{ARM_1993_29_1-2_a2,
     author = {Markvartov\'a, Jitka},
     title = {A parallelogram configuration condition in nets},
     journal = {Archivum mathematicum},
     pages = {5--17},
     year = {1993},
     volume = {29},
     number = {1-2},
     mrnumber = {1242623},
     zbl = {0797.05026},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1993_29_1-2_a2/}
}