1. Bakker, P. M.: Morfogenese en involutie van de ductus arteriosus bij de mens. Diss. Leiden 1962.
2. Born, G. V. R., Dawes, G. S., Mott, J. C., Rennick, B. R.: The constriction of the ductus arteriosus caused by oxygen and by asphyxia in newborn lambs. J. Physiol. (Lond.) 132, 304?342 (1956).
3. Caulfield, J. B.: Effects of varying the vehicle for OsO4 in tissue fixation. J. biophys. biochem. Cytol. 3, 827?830 (1957).
4. Doerr, W.: Pathologische Anatomie der angeborenen Herzfehler. In: Handbuch der inneren Medizin, Bd. 9, Teil III. Berlin-Göttingen-Heidelberg: Springer 1960.
5. Harlan, W. R., Said, S. I.: Selected aspects of lung metabolism. The biological basis of medicine, ed. E. E. Bittar, vol. 6, p. 357?384. Acad. Press 1969.