On two pairs of non-self hybrid mappings Ljubomir B. Ćirić and Jeong Sheok Ume and Nebojša T. Nikolić, 4 March 2008, J. Aust. Math. Soc., vol. 83, pp. 17--29 http://www.austms.org.au/Journal+of+the+Australian+Mathematical+Society/V83P1/831-n140-CiUmNi/