Frey, E., Tischlinger, H. The Late Jurassic pterosaur Rhamphorhynchus, a frequent victim of the ganoid fish Aspidorhynchus? // PLOS ONE. — 2012. — Vol. 7, no. 3 (23 April). — P. e31945. — DOI:10.1371/journal.pone.0031945. — PMID22412850 .
Frey, E., Tischlinger, H. The Late Jurassic pterosaur Rhamphorhynchus, a frequent victim of the ganoid fish Aspidorhynchus? // PLOS ONE. — 2012. — Vol. 7, no. 3 (23 April). — P. e31945. — DOI:10.1371/journal.pone.0031945. — PMID22412850 .