Călin, O.; Mangione, V. Variational calculus on sub-Riemannian manifolds. (English) Zbl 1050.37031 Balkan J. Geom. Appl. 8, No. 1, 21-32 (2003). MSC: 37J60 53C17 70H03 37J45 PDFBibTeX XMLCite \textit{O. Călin} and \textit{V. Mangione}, Balkan J. Geom. Appl. 8, No. 1, 21--32 (2003; Zbl 1050.37031) Full Text: EuDML
Calin, Ovidiu; Mangione, Vittorio Geodesics with constraints on Heisenberg manifolds. (English) Zbl 1043.37046 Result. Math. 44, No. 1-2, 44-53 (2003). Reviewer: Narciso Román-Roy (Barcelona) MSC: 37J60 53B21 70H03 PDFBibTeX XMLCite \textit{O. Calin} and \textit{V. Mangione}, Result. Math. 44, No. 1--2, 44--53 (2003; Zbl 1043.37046) Full Text: DOI