@article{MM2_1982__39_154881,
     author = {Toru Ishihara},
     title = {Total curvature of manifolds in self-immersed manifolds.},
     journal = {Manuscripta mathematica},
     pages = {201--218},
     publisher = {mathdoc},
     volume = {39},
     year = {1982},
     zbl = {0496.53040},
     url = {http://geodesic.mathdoc.fr/item/MM2_1982__39_154881/}
}