@article{AM2_1968__1_135940,
     author = {Alexander Ostrowski},
     title = {On the {Morse-Kuiper} {Theorem.}},
     journal = {Aequationes mathematicae},
     pages = {66--76},
     publisher = {mathdoc},
     volume = {1},
     year = {1968},
     zbl = {0159.35002},
     url = {http://geodesic.mathdoc.fr/item/AM2_1968__1_135940/}
}