by J.-P. Mathieu and G. Ourisson. by C. A. Taylor and H. Lipson. by F. A. Benson and D. Harrison. by J.P. Mathieu [and others] by E. T. Whittaker and G. N. Watson. by J. R. Green and D. Margerison. by H. J. Emeleus and J. S. Anderson.