@article{EJMCA_2019_7_4_a1,
     author = {G. A. Chumakov},
     title = {Quasi-isometric almost orthogonal grids},
     journal = {Eurasian journal of mathematical and computer applications},
     pages = {18--43},
     year = {2019},
     volume = {7},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJMCA_2019_7_4_a1/}
}