Text in periodical
«Telethon». – Radical Software. – Vol. 2, no. 2 [(1973)]. – P. 62-63.
Also available on the Internet. {{www.radicalsoftware.org}}
Text in periodical
«Bill Gray». – Radical Software. – Vol. 2, no. 2 [(1973)]. – P. 15-16.
Also available on the Internet. {{www.radicalsoftware.org}}