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@article{AM2_1978__17_136742, author = {L.L. Keener and W.H. Ling}, title = {Approximation under an arc length constraint.}, journal = {Aequationes mathematicae}, pages = {235--240}, publisher = {mathdoc}, volume = {17}, year = {1978}, zbl = {0379.41017}, url = {http://geodesic.mathdoc.fr/item/AM2_1978__17_136742/} }
L.L. Keener; W.H. Ling. Approximation under an arc length constraint.. Aequationes mathematicae, Tome 17 (1978), pp. 235-240. http://geodesic.mathdoc.fr/item/AM2_1978__17_136742/