@article{CMH_1973__48_139555,
     author = {Karsten Grove},
     title = {Geodesics {Satisfying} {General} {Boundary} {Conditions}},
     journal = {Commentarii mathematici Helvetici},
     pages = {376--381},
     publisher = {mathdoc},
     volume = {48},
     year = {1973},
     zbl = {0268.53020},
     url = {http://geodesic.mathdoc.fr/item/CMH_1973__48_139555/}
}