James L. West, "The Riabushinsky Circle" in E. W. Clowes, S. D. Kassow, J. L. West, ed., Between Tsar and People (Princeton UP, 1991), pp.
In the book "Between Tsar and People," edited by E. W. Clowes, S. D. Kassow, and James L. West, the chapter titled "The Riabushinsky Circle" appears on pages.