Hirofumi Nakai, Daichi Yoritomi "The structure of the general chromatic {$E\sb 1$}-term {${\rm Ext}\sb {\Gamma(2)}\sp 0({\rm BP}\sb *,M\sb 2\sp 1)$} at the prime 2," Hiroshima Mathematical Journal, Hiroshima Math. J. 33(1), 137-156, (March 2003)