| 30 November 2000|
| The History of Blood Gases, Acids and Bases|
Mikael Rørth, John Wendell Severinghaus, Sønnik Clausen, Hans Christian Engell, Peter Bie
Poul Bjørndahl Astrup Wikipedia
Poul Bjørndahl Astrup (4 August 1915 – 30 November 2000) was a Danish clinical chemist famous for inventing a CO2 electrode and co-inventing the concept of base excess.