@misc {IOPORT.70699137,
    author       = {Frankel, Yair},
    title        = {A practical protocol for large group oriented networks},
    howpublished = {EUROCRYPT, 56-61 (1989).},
    year         = {1989},
    doi          = {10.1007/3-540-46885-4_8},
    identifier   = {70699137},
}