@article{10_4153_CJM_1971_024_7,
     author = {Lachlan, A. H.},
     title = {Solution to a {Problem} of {Spector}},
     journal = {Canadian journal of mathematics},
     pages = {247--256},
     year = {1971},
     volume = {23},
     number = {2},
     doi = {10.4153/CJM-1971-024-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1971-024-7/}
}