@article{10_1017_S0017089500000677,
     author = {Anderson, Ian},
     title = {A variance method in combinatorial number theory},
     journal = {Glasgow mathematical journal},
     pages = {126--129},
     year = {1969},
     volume = {10},
     number = {2},
     doi = {10.1017/S0017089500000677},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500000677/}
}