%0 Journal Article %A A. A. Borisenko %T A necessary and sufficient condition for the existence of simple closed geodesics on regular tetrahedra in spherical space %J Sbornik. Mathematics %D 2022 %P 161-172 %V 213 %N 2 %U http://geodesic.mathdoc.fr/item/SM_2022_213_2_a1/ %G en %F SM_2022_213_2_a1