@article{10_4153_CJM_1979_059_6,
     author = {Bernstein, Leon},
     title = {Periodic {Algorithms} and their {Application}},
     journal = {Canadian journal of mathematics},
     pages = {565--595},
     year = {1979},
     volume = {31},
     number = {3},
     doi = {10.4153/CJM-1979-059-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1979-059-6/}
}