@article{10_21136_CPM_1988_118356,
     author = {Lettrich, Jaroslav and Peren\v{c}aj, J\'an},
     title = {On orthogonality in nets},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {369--386},
     year = {1988},
     volume = {113},
     number = {4},
     doi = {10.21136/CPM.1988.118356},
     mrnumber = {981879},
     zbl = {0681.51003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1988.118356/}
}