@article{10_4153_CJM_1987_023_7,
     author = {Tang, Betty and Golomb, Solomon W. and Graham, Ronald L.},
     title = {A {New} {Result} on {Comma-Free} {Codes} of {Even} {Word-Length}},
     journal = {Canadian journal of mathematics},
     pages = {513--526},
     year = {1987},
     volume = {39},
     number = {3},
     doi = {10.4153/CJM-1987-023-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1987-023-7/}
}