1. AK to Mimi, Oct. 17, 1899.
2. AK to Mimi, Oct. 31, 1899.
3. John T. Edsall: The controversy over oxygen secretion. Talk presented at History satellite symposium at the International Congress of Physiological Sciences, Vancouver, 1987; J. S. Millege: The great oxygen secretion controversy. (Lancet,2, 1408–1411, 1985).
4. Christian Bohr: Ueber die Lungenathmung. (Skand. Archiv Physiol., 2, 1890).
5. AK Publ. #2.