@article{AM2_1972__8_136293,
     author = {A. Bacopoulos and M. Marsden},
     title = {On a {Map} from the {Splines} into a {Positive} {Cone} with {Applications.}},
     journal = {Aequationes mathematicae},
     pages = {221--228},
     publisher = {mathdoc},
     volume = {8},
     year = {1972},
     zbl = {0266.41011},
     url = {http://geodesic.mathdoc.fr/item/AM2_1972__8_136293/}
}