@article{10_4153_CJM_1970_010_6,
     author = {Lachlan, A. H.},
     title = {Initial {Segments} of {Many-One} {Degrees}},
     journal = {Canadian journal of mathematics},
     pages = {75--85},
     year = {1970},
     volume = {22},
     number = {1},
     doi = {10.4153/CJM-1970-010-6},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-010-6/}
}