TY - JOUR AU - Rašajski, Marija AU - Lutovac, Tatjana AU - Malešević, Branko PY - 2018 TI - Sharpening and generalizations of Shafer-Fink and Wilker type inequalities: a new approach JO - Journal of Nonlinear Sciences and Applications SP - 885--893 VL - 11 IS - 7 AB - In this paper, we propose and prove some generalizations and sharpenings of certain inequalities of Wilker's and Shafer-Fink's type. Application of the Wu-Debnath theorem enabled us to prove some double sided inequalities. SN - ISSN 2008-1901 UR - http://dx.doi.org/10.22436/jnsa.011.07.02 DO - 10.22436/jnsa.011.07.02 ID - Rašajski2018 ER -