@article{10_4153_CMB_1960_009_4,
     author = {Schwerdtfeger, Hans},
     title = {Interpolation and {Curve} {Fitting} by {Sectionally} {Linear} {Functions}},
     journal = {Canadian mathematical bulletin},
     pages = {41--57},
     year = {1960},
     volume = {3},
     number = {1},
     doi = {10.4153/CMB-1960-009-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1960-009-4/}
}