1. Neuman, E.: Sharp inequalities involving Neuman–Sándor and logarithmic means. J. Math. Inequal. 7(3), 413–419 (2013)
2. Chu, Y.-M., Zong, C., Wang, G.-D.: Optimal convex combination bounds of Seiffert and geometric means for arithmetic mean. J. Math. Inequal. 5(3), 429–434 (2011)
3. Chu, Y.-M., Hou, S.-W.: Sharp bounds for Seiffert mean in terms of contraharmonic mean. Abstr. Appl. Anal. 2012, Article ID 425175 (2012)
4. Chu, Y.-M., Wang, M.-K., Wang, G.-D.: The optimal generalized logarithmic mean bounds for Seiffert mean. Acta Math. Sci. 32B(4), 1619–1626 (2012)
5. Chu, Y.-M., Wang, M.-K., Wang, Z.-K.: Best possible inequalities among harmonic, geometric, logarithmic and Seiffert means. Math. Inequal. Appl. 15(2), 415–422 (2012)