Посилання:Totally geodesic submanifolds in the tangent bundle of a Riemannian 2-manifold / A. Yampolsky // Журнал математической физики, анализа, геометрии. — 2005. — Т. 1, № 1. — С. 116-139. — Бібліогр.: 14 назв. — англ.
We give a full description of totally geodesic submanifolds in the tangent bundle of a Riemannian 2-manifold of constant curvature and present a new class of a cylinder-type totally geodesic submanifolds in the general case.