Wikipedia:Articles for deletion/The Group 1965
Beyond the articles I found above, I found some additional articles in Aera (昭和４０年生まれの展覧会, 1996.7.22 p. 73) and in the Asahi Shinbun (アートの中で過ごす夜　触って寝そべり鑑賞, 2005.11.11, Evening ed. p. 7; タカの絵、対比の妙, morning ed. p. 33). I believe there is enough coverage here to satisfy criterion 3 of 
— User:Michitaro, 03:05, 22 August 2012 (UTC)
Stance: keep
Cited policy: WP:ARTIST (Wikipedia:Notability)