by E. J. Itumoh, O. P. Aghamelu, T. Izuagie
by Benson Nsikak, N.U. Benson, A.E. Adedapo, A.L. Eritobor, E.D. Udosen
by G. Dimitriou, Papadopoulou Maria P.
by Carotenuto M., Lofrano G., Siciliano A., Aliberti F., Guida M.
by C. Couto, I. Pinto, T. Madureira, M.J. Rocha, M.E. Tiritan, J.A. Lopes, Almeida Agostinho A.
by O.N. Omaka, F.I. Nwabue, E.J. Itumoh, E.C. Oroke, D.O. Igwe
by Kagalou If., Tsimarakis G., Paschos I.
by Cancho B., Ventura F.
by Ovezikoglou P., Ladakis M., Dassenakis M., Skoullos M.
by Naddeo V., Zarra T., Belgiorno V.
by Manoli E., Katsiardi P., Arampatzis G., Assimacopoulos D.
by Schreiner C., Branzila M., Trandabat A., Ciobanu R.C.
by Aloupi Marina, Angelidis M.O., Gabriel A., Karantanelli M., Koulousaris M., Nikolaou A., Petsas A., Tsirtsis G., Vagi M., Vlatsiotou F.
by Maraziotis E., Sarotis L., Marazioti C., Marazioti P.
by Polymeneas P., Pilinis C.
by Zarra T., Naddeo V., Belgiorno V.
by Estokova Adriana, Števulová N., Kubincová L.
by Karapanagioti H.K., Ogata Y., Takada H.
by Bloutsos A.A., Yannopoulos P.C.