@article{10_4153_CJM_1972_110_4,
     author = {Soare, Robert I.},
     title = {The {Friedberg-Muchnik} {Theorem} {Re-Examined}},
     journal = {Canadian journal of mathematics},
     pages = {1070--1078},
     year = {1972},
     volume = {24},
     number = {6},
     doi = {10.4153/CJM-1972-110-4},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1972-110-4/}
}