@article {IOPORT.50215936,
    author       = {Pippenger, Nicholas},
    title        = {Pure versus impure lisp},
    year         = {1997},
    journal      = {ACM Trans. Program. Lang. Syst.},
    volume       = {19},
    number       = {2},
    pages        = {223-238},
    doi          = {10.1145/244795.244798},
    identifier   = {50215936},
}