On Lie symmetries, exact solutions and integrability to the KdV-Sawada-Kotera-Ramani equation Pan-Li Ma, Shou-Fu Tian, Tian-Tian Zhang and Xing-Yong Zhang Eur. Phys. J. Plus, 131 4 (2016) 98 Published online: 15 April 2016 DOI: 10.1140/epjp/i2016-16098-2