Liu Bao-Kang and He Long-Guang - Some properties of Dirac-Nijenhuis manifolds;
K. Pankrashkin - Resolvents of self-adjoint extensions with mixed boundary conditions;
E. B. Manoukian and S. Sirininlakul - Stability of matter in 2D;
S. Pulmannova - Effect algebras with compressions.