@article{article691e62a3,
title   = {On the volume of unit vector fields on spaces of constant sectional curvature},
author = {Brito, Fabiano Gustavo Braga and Chacon, Pablo M. and Naveira, Antonio Martinez},
year = {2004},
doi = {10.1007/s00014-004-0802-4},
journal   = {Commentarii Mathematici Helvetici}
}