SONET: now it's the standard optical network. - Ralph Ballart; Yau-Chau Ching (IEEE Commun. Mag., 1989)

CCITT standardization of network node interface of synchronous digital hierarchy. - Koichi Asatani; Keith R. Harrison; Ralph Ballart (IEEE Commun. Mag., 1990)

Deployment status and common technical specifications for a B-PON system. - Hiromi Ueda; Kenji Okada; Brian Ford; Glenn Mahony; Stephen Hornung; David Faulkner; Jacques Abiven; Sophie Durel; Ralph Ballart; John Erickson (IEEE Commun. Mag., 2001)