| #91 | Transactions of the IRE Professional Group on Information Theory. -- New York : Institute of Radio Engineers, 1953-1954. -- ISSN 2168-2690 print. -- ISSN 2168-2704 online |
| #92 | Worldwide computer products news. -- Coventry : M2 Communications, 1995-. -- ISSN 1363-9889 |
| #93 | Worldwide videotex update. -- Boston : Worldwide Videotex, 1981-. -- ISSN 0731-7891 |
| #94 | XBN. -- New York : Ziff Davis Media, 2002-. -- ISSN 1538-9723 |
| #95 | Yahoo! Internet Life. -- Boulder : Ziff-Davis, 1996-2002. -- ISSN 1088-0070 |
| #96 | Zpravodaj ČIS. -- Česká republika : Praha : Česká informační společnost, 1992-1993. -- ISSN 2695-1258 |