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 work "Between Tsar and People," authored by E. W. Clowes, S. D. Kassow, and edited by James L. West, the section "The Riabushinsky Circle" is found in the book's pagination.