@article{10_4153_CJM_1974_076_x,
     author = {Lebensold, Kenneth W.},
     title = {Extrema of a {Class} of {Functions} on a {Finite} {Set}},
     journal = {Canadian journal of mathematics},
     pages = {806--819},
     year = {1974},
     volume = {26},
     number = {4},
     doi = {10.4153/CJM-1974-076-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1974-076-x/}
}