1. Twenty years of Ketamine—A Retrospective view;Adams;Anaesthesist,1990
2. An historical perspective on low back pain and disability;Allan;Acta Orthop Scand,1989
3. Harvey Cushing e Reynaldo dos Santos;Antunes;Acta Med Port,1989
4. The tragic and marvelous history of anesthesia;Arnulf;Presse Med,1989
5. The Lidwill machine;Ball;Anaesth Intens Care,1990