@article{10_4153_CJM_1981_104_9,
     author = {Squires, W. A.},
     title = {Necessary {Conditions} for {UniversalInterpolation} in},
     journal = {Canadian journal of mathematics},
     pages = {1356--1364},
     year = {1981},
     volume = {33},
     number = {6},
     doi = {10.4153/CJM-1981-104-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1981-104-9/}
}