1. Electronic implant;Caldwell;Lancet,1965
2. Electrical treatment of incontinence;Hopkinson;Br. J. Surg.,1967
3. Electrical treatment of incontinence using an external stimulator with intra-anal electrodes;Hopkinson;Ann. R. Coll. Surg. Engl.,1972
4. An electric pessary for stress incontinence;Alexander;Lancet,1968
5. New device for control of female urinary incontinence;De Soldenhoff;Br. Med. J.,1969