Text in periodical
«Video directory». – Radical Software. – Vol. 1, no. 5 [(1972)]. – P. 94-107.
Also available on the Internet. {{www.radicalsoftware.org}}
Text in periodical
«[Cable TV : introduction]». – Radical Software. – Vol. 1, no. 5 [(1972)]. – P. 80.
Also available on the Internet. {{www.radicalsoftware.org}}
Text in periodical
«Contents». – Radical Software. – Vol. 1, no. 5 [(1972)]. – P. 2-3.
Also available on the Internet. {{www.radicalsoftware.org}}