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Paulij, W.P.; Bogaards, R.H.; Denucé, J.M. (1990). Influence of salinity on embryonic development and the distribution of Sepia officinalis in the Delta Area (South-Western part of The Netherlands). Mar. Biol. (Berl.) 107(1): 17-23. http://dx.doi.org/10.1007/BF01313238, more
Tensen, C.P. (1991). Hyperglycemic neuropeptides in crustaceans: A biochemical and molecular biological study. PhD Thesis. Tensen Scientific: Amsterdam. ISBN 90-74013-01-5. 159 pp., more