@article{ASENS_1978_4_11_4_451_0,
     author = {Heintze, Ernst and Karcher, Hermann},
     title = {A general comparison theorem with applications to volume estimates for submanifolds},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {451--470},
     publisher = {Elsevier},
     volume = {Ser. 4, 11},
     number = {4},
     year = {1978},
     doi = {10.24033/asens.1354},
     mrnumber = {80i:53026},
     zbl = {0416.53027},
     language = {en},
     url = {http://www.numdam.org/articles/10.24033/asens.1354/}
}