%0 Journal Article %A G. A. Chumakov %T Quasi-isometric almost orthogonal grids %J Eurasian journal of mathematical and computer applications %D 2019 %P 18-43 %V 7 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJMCA_2019_7_4_a1/ %G en %F EJMCA_2019_7_4_a1