Baumgarten-Schumann, D. & Piiper, J. (1968)
Gas exchange in the gills of resting unanesthetized dogfish (Scyliorhinus stellaris). Respiration Physiology, 5(3), 317–325
DOI: 10.1016/0034-5687(68)90023-6

Piiper, J. & Baumgarten-Schumann, D. (1968)
Transport of O2 and CO2 by water and blood in gas exchange of the dogfish (Scyliorhinus stellaris). Respiration Physiology, 5(3), 326–337
DOI: 10.1016/0034-5687(68)90024-8

Piiper, J. & Baumgarten-Schumann, D. (1968)
Effectiveness of O2 and CO2 exchange in the gills of the dogfish (Scyliorhinus stellaris). Respiration Physiology, 5(3), 338–349
DOI: 10.1016/0034-5687(68)90025-X