1. Carcinogenic Action of Pronethalol
2. Letter to pharmaceutical companies known to be developing ß-adrenergic blocking agents;F.D.A.,1972
3. Annual report 1975;Medicines Commission (U.K.),1976
4. Physicians Desk Reference 1980, Medical Economics Co., Oradell, N.J., U.S.A., (a) p. 899, (b) p. 1200.