by Wu, GuoQi, Ao, HongRui, Jiang, HongYuan, Izzheurov, E. A.
Published in Science in China Series E: Technological Sciences (01.12.2009)

by Villatoro, F.R., Pérez, J., Santander, J.L.G., Borovsky, M.A., Ratis, Yu.L., Izzheurov, E.A., de Córdoba, P. Fernández
Published in Journal of mathematical analysis and applications (01.02.2011)

by Pérez, J., Villatoro, F.R., Santander, J.L.G., Borovsky, M.A., Ratis, Yu.L., Izzheurov, E.A., Fernández de Córdoba, P.
Published in Applied mathematics and computation (15.10.2008)

by VILLATORO, F. R, PEREZ, J, SANTANDER, J. L. G, BOROVSKY, M. A, RATIS, Yu. L, IZZHEUROV, E. A, DE CORDOBA, P. Fernández
Published in Journal of mathematical analysis and applications (2011)

by PEREZ, J, VILLATORO, F. R, SANTANDER, J. L. G, BOROVSKY, M. A, RATIS, Yu. L, IZZHEUROV, E. A, FERNANDEZ DE CORDOBA, P
Published in Applied mathematics and computation (2008)