Jacobs, D. K.; Wray, C. G.; Wedeen, C. J.; Kostriken, R.; Desalle, R.; Staton, J. L.; Gates, R. D.; Lindberg, D. R. (2000). "Molluscan engrailed expression, serial organization, and shell evolution". Evolution & Development. 2 (6): 340–347. doi:10.1046/j.1525-142x.2000.00077.x. PMID11256378. S2CID25274057.
Baratte; Andouche, A.; Bonnaud, L. (2007). "Engrailed in cephalopods: a key gene related to the emergence of morphological novelties". Development Genes and Evolution. 217 (5): 353–362. doi:10.1007/s00427-007-0147-2. PMID17394016. S2CID22241391.
Moshel, S. M.; Levine, M.; Collier, J. R. (1998). "Shell differentiation and engrailed expression in the Ilyanassa embryo". Development Genes and Evolution. 208 (3): 135–141. doi:10.1007/s004270050164. PMID9601986. S2CID3152423.
Wanninger, A.; Haszprunar, G. (2001). "The expression of an engrailed protein during embryonic shell formation of the tusk-shell, Antalis entalis (Mollusca, Scaphopoda)". Evolution and Development. 3 (5): 312–321. doi:10.1046/j.1525-142X.2001.01034.x. PMID11710763. S2CID8936294.
Samadi, L.; Steiner, G. (2009). "Involvement of Hox genes in shell morphogenesis in the encapsulated development of a top shell gastropod (Gibbula varia L.)". Development Genes and Evolution. 219 (9–10): 523–530. doi:10.1007/s00427-009-0308-6. PMID19949812. S2CID26031156.
Jacobs, D. K.; Wray, C. G.; Wedeen, C. J.; Kostriken, R.; Desalle, R.; Staton, J. L.; Gates, R. D.; Lindberg, D. R. (2000). "Molluscan engrailed expression, serial organization, and shell evolution". Evolution & Development. 2 (6): 340–347. doi:10.1046/j.1525-142x.2000.00077.x. PMID11256378. S2CID25274057.
Baratte; Andouche, A.; Bonnaud, L. (2007). "Engrailed in cephalopods: a key gene related to the emergence of morphological novelties". Development Genes and Evolution. 217 (5): 353–362. doi:10.1007/s00427-007-0147-2. PMID17394016. S2CID22241391.
Moshel, S. M.; Levine, M.; Collier, J. R. (1998). "Shell differentiation and engrailed expression in the Ilyanassa embryo". Development Genes and Evolution. 208 (3): 135–141. doi:10.1007/s004270050164. PMID9601986. S2CID3152423.
Wanninger, A.; Haszprunar, G. (2001). "The expression of an engrailed protein during embryonic shell formation of the tusk-shell, Antalis entalis (Mollusca, Scaphopoda)". Evolution and Development. 3 (5): 312–321. doi:10.1046/j.1525-142X.2001.01034.x. PMID11710763. S2CID8936294.
Samadi, L.; Steiner, G. (2009). "Involvement of Hox genes in shell morphogenesis in the encapsulated development of a top shell gastropod (Gibbula varia L.)". Development Genes and Evolution. 219 (9–10): 523–530. doi:10.1007/s00427-009-0308-6. PMID19949812. S2CID26031156.
Jacobs, D. K.; Wray, C. G.; Wedeen, C. J.; Kostriken, R.; Desalle, R.; Staton, J. L.; Gates, R. D.; Lindberg, D. R. (2000). "Molluscan engrailed expression, serial organization, and shell evolution". Evolution & Development. 2 (6): 340–347. doi:10.1046/j.1525-142x.2000.00077.x. PMID11256378. S2CID25274057.
Baratte; Andouche, A.; Bonnaud, L. (2007). "Engrailed in cephalopods: a key gene related to the emergence of morphological novelties". Development Genes and Evolution. 217 (5): 353–362. doi:10.1007/s00427-007-0147-2. PMID17394016. S2CID22241391.
Moshel, S. M.; Levine, M.; Collier, J. R. (1998). "Shell differentiation and engrailed expression in the Ilyanassa embryo". Development Genes and Evolution. 208 (3): 135–141. doi:10.1007/s004270050164. PMID9601986. S2CID3152423.
Wanninger, A.; Haszprunar, G. (2001). "The expression of an engrailed protein during embryonic shell formation of the tusk-shell, Antalis entalis (Mollusca, Scaphopoda)". Evolution and Development. 3 (5): 312–321. doi:10.1046/j.1525-142X.2001.01034.x. PMID11710763. S2CID8936294.
Samadi, L.; Steiner, G. (2009). "Involvement of Hox genes in shell morphogenesis in the encapsulated development of a top shell gastropod (Gibbula varia L.)". Development Genes and Evolution. 219 (9–10): 523–530. doi:10.1007/s00427-009-0308-6. PMID19949812. S2CID26031156.