by Özöğür-Akyüz, S., Weber, G.-W.
Published in Journal of global optimization (01.10.2010)

by Steihaug, Trond, Suleiman, Sara
Published in Journal of global optimization (01.07.2013)

by Wilkie, K.P., Drapaca, C.S., Sivaloganathan, S.
Published in Applied mathematics and computation (2010)

by Mohebi, H.
Published in Journal of global optimization (01.03.2013)

by Barsegian, G. A.
Published in Complex variables, theory & application (10.06.2005)

by Aussel, D., Cotrina, J.
Published in Journal of global optimization (01.05.2011)

by Andrei, Ionicǎ, Costea, Nicuşor, Matei, Andaluzia
Published in Journal of global optimization (01.05.2013)

by Liu, Zeqing, Zhu, Jingjing, Kang, Shin Min, Ume, Jeong Sheok
Published in Journal of global optimization (01.11.2013)

by Ceng, Lu-Chuan, Yao, Jen-Chih
Published in Journal of global optimization (01.01.2013)

by Wang, Youyu, Liu, Guofeng, Hu, Yinping
Published in Applied mathematics and computation (01.07.2010)

by Yuan, Y.-B, Fang, S.-C., Gao, D. Y.
Published in Journal of global optimization (01.02.2012)

by Wangkeeree, Rattanaporn, Wangkeeree, Rabian
Published in Journal of global optimization (01.02.2013)

by Udrişte, Constantin, Bejenaru, Andreea
Published in Journal of global optimization (01.10.2011)

by Guo, Senlin, Srivastava, H.M.
Published in Applied mathematics letters (01.11.2008)

by Obuchowska, Wiesława T.
Published in Journal of global optimization (01.03.2010)

by Zhang, Hao, Wang, Shuning
Published in Journal of computational and applied mathematics (15.04.2008)

by Birgin, Ernesto G., Gozzi, Erico M., Resende, Mauricio G. C., Silva, Ricardo M. A.
Published in Journal of global optimization (01.10.2010)

by Palanthandalam-Madapusi, Harish J., Van Pelt, Tobin H., Bernstein, Dennis S.
Published in Journal of global optimization (01.12.2009)

by Baek, In-Soo
Published in Journal of mathematical analysis and applications (01.12.2008)

by COVIC, V, VESKOVIC, M, OBRADOVIC, A
Published in Mathematical and computer modelling (01.05.2010)