Text in periodical
O'Brien, Paul. – «Ars Electronica 2000». – Circa. – No. 94 (Winter 2000). – P. 62-64.
Part of Web site
O'Brien, Paul. – «Ars Electronica 99». – Eduardo Kac. – Oak Park : E. Kac. – Originally published in 1999. {{www.ekac.org}}
Text in periodical
O'Brien, Paul. – «Ars Electronica 99». – Circa [on line]. – No. 90 (Winter 1999). – P. S5-S7.
Also available on the Internet. {{www.recirca.com}}