@inproceedings{inproceedingsc4899337,
title   = {Submanifolds with nonpositive extrinsic curvature},
author = {Canevari, Samuel and Freitas, Guilherme and Manfio, Fernando},
year = {2016},
publisher = {ITU},
booktitle   = {International Workshop on Theory of Submanifolds - IWTS}
}