by C.L. Godske [and others] by H.M. Randall [and others] by J.P. Mathieu [and others] by P. B. Hirsch [and others] by D.E. Daney [and others] by D.P. Smith [and others] by E.L. Willey [and others] by J.P. Fulton [and others] by W. C. Allee [and others] [by] J.M. Wilson [and others]