JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, vol.270, pp.564-570, 2014 (SCI-Expanded)
The main purpose of the present paper is to give the extent idea which was introduced by Robinson(1947) [6]. One of the interesting application of this extent idea is an investigation of the class of harmonic mappings related to Janowski starlike functions. (C) 2014 Elsevier B.V. All rights reserved.