@article{10_4153_CJM_1967_096_4,
     author = {Schoenberg, I. J. and Zaremba, S. K.},
     title = {On {Cauchy's} {Lemma} {Concerning} {Convex} {Polygons}},
     journal = {Canadian journal of mathematics},
     pages = {1062--1071},
     year = {1967},
     volume = {19},
     number = {1},
     doi = {10.4153/CJM-1967-096-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1967-096-4/}
}