1. Purinergic nerves;Burnstock;Pharmacological Reviews,1972
2. L’activité spontanée du sphincter oesophagien supérieur chez le mouton;Car;Journal de Physiologie,1970
3. Patterns and origin of some esophageal responses to stretch and electrical stimulation;Christensen;Gastroenterology,1970
4. Pharmacologic identification of the lower esophageal sphincter;Christensen;Journal of Clinical Investigation,1970
5. The controls of gastrointestinal movements: some old and new views;Christensen;New England Journal of Medicine,1971