1. Protein variation in Schilbe mystus and Eutropius niloticus (Ruppel) (Pisces Siluriformes) in the Volta basin of Ghana, West Africa;Abban;Aquac. Fish. Manage.,1988
2. Do natural mortality and availability decline with age? An alternative yield paradigm for juvenile fisheries, illustrated by the hake Merluccius merluccius fishery in the Mediterranean;Abella;IFREMER Aquat. Living Resour.,1997
3. Abella A., Caddy J. F., Serena F., 1998. Estimation of the parameters of the Caddy reciprocal M – at – age model for the construction of natural vectors. DYNPOP. Genova 2–5.10.96 Cahiers Options Médit. 35, 191–200.
4. Taxonomic status and genetic differentiation among West African populations of the Chrysichthys auratus complex (Pisces, Siluriforms), based on protein electrophoresis;Agnese;Aquac. Fish. Manage.,1991
5. Akpan, I.I., 2013. Species composition and abundance in Uta Awa Creek, Niger Delta region, Nigeria. J. Agric. Vet. Sci. (IOSR – JAVS), 3(3), 56–60. www.iosrjournals.Org.