@article{GDZPPN002063646,
title = {Dirichlet regions in manifolds without conjugate points.},
journal = {Commentarii mathematici Helvetici},
volume = {54},
year = {1979},
pages = {642-658},
zbl = {0419.53025},
url = {http://dml.mathdoc.fr/item/GDZPPN002063646}
}
Im Hof, Hans-Christoph; Ehrlich, P.E. Dirichlet regions in manifolds without conjugate points.. Commentarii mathematici Helvetici, Tome 54 (1979) pp. 642-658. http://gdmltest.u-ga.fr/item/GDZPPN002063646/