Pethick, E. (2006). Degree zero: Roy Ascott's radical 'Groundcourse' at the Ealing and Ipswich art schools in the 1960s was as influential as it was unorthodox in its approach to teaching art. frieze.

Pethick, Emily. "Degree Zero: Roy Ascott's Radical 'Groundcourse' at the Ealing and Ipswich Art Schools in the 1960s Was as Influential as It Was Unorthodox in Its Approach to Teaching Art." Frieze 2006.

Pethick, Emily. "Degree Zero: Roy Ascott's Radical 'Groundcourse' at the Ealing and Ipswich Art Schools in the 1960s Was as Influential as It Was Unorthodox in Its Approach to Teaching Art." Frieze, 2006.