@misc {IOPORT.70170993,
    author       = {Berman, Leonard and Hartmanis, Juris},
    title        = {On polynomial time isomorphisms of complete sets},
    howpublished = {Theoretical Computer Science, 1-16 (1977).},
    year         = {1977},
    doi          = {10.1007/3-540-08138-0_1},
    identifier   = {70170993},
}