A Network Organization Used for Document Retrieval. - W. Bruce Croft; R. Wolf; Roger Thompson (SIGIR, 1983)

Autonomous satellite state determination by use of two-directional links. - Bernd Eissfeller; T. Zink; R. Wolf; J. Hammesfahr; Achim Hornbostel; J. H. Hahn; P. Tavella (Int. J. Satell. Commun. Netw., 2000)