by D. W. Appel [and others] by W. C. Allee [and others] by D. W. Turner [and others] by D.E. Daney [and others] [by] E. L. Barger [and others] by L. W. Crandall [and others] by H.M. Randall [and others] by J.P. Mathieu [and others] by P. B. Hirsch [and others] by C. D. Haagensen [and others]