A Revised Catalog of Available X.500 Implementations. - Arlene F. Getchell; Srinivas R. Sataluri (RFC, 1994)

Recommendations for an X.500 Production Directory Service. - Russ Wright; Arlene F. Getchell; Tim Howes; Srinivas R. Sataluri; Wengyik Yeong (RFC, 1995)