Contents:
Nobuhiro Innami. Differentiability of invariant circles for strongly integrable convex billiards. 1--17.
Ganesan Arthi, Krishnan Balachandran. Controllability of nonlinear impulsive second order integrodifferential evolution systems in Banach spaces. 19--44.
Mayuko Kon. Ricci pseudo $\eta$-parallel real hypersurfaces. 45--55.