P. E.  Heegaard, ?Some new caligids from the Gilbert Islands.?, Arkiv för Zoologi, vol. (A)34, no. 16, pp. 1-12, 1943.

P. E.  Heegaard, ?Some parasitic copepods from fishes in the Uppsala University collections.?, Arkiv för Zoologi, vol. (A)35, no. 18, pp. 1-27, 1945.

P. E.  Heegaard, ?Parasitic copepods mainly from tropical and antarctic seas.?, Arkiv för Zoologi, vol. (A)34, no. 18, pp. 1-37, 1943.