by C. T. Lloyd and others. by E. J. Leroux and others. by Liu Po-cheng and others. Lyle P. Schertz and others. by Wang Ching-Wei and others. Kim Suk-Joon and others. by L. W. F. Elen and R. Myers. by Julius H. Comroe [and others] by R. Willheim and M. Waters. by A. P. Dunlop and F. N. Peters.