@article {IOPORT.50193557,
    author       = {Alon, Noga and Stav, Uri},
    title        = {New bounds on parent-identifying codes: the case of multiple parents},
    year         = {2004},
    journal      = {Combinatorics, Probability & Computing},
    volume       = {13},
    number       = {6},
    pages        = {795-807},
    doi          = {10.1017/S0963548304006388},
    identifier   = {50193557},
}