%0 Journal Article %A B. M. Dubrov %A B. P. Komrakov %T The problem of constructive equivalence in differential geometry %J Sbornik. Mathematics %D 2000 %P 655-681 %V 191 %N 5 %U http://geodesic.mathdoc.fr/item/SM_2000_191_5_a2/ %G en %F SM_2000_191_5_a2