Professor Antonino Maugeri awarded with the prize of the International Colloquia on Differential Equations 50th Anniversary of Professor P. Popivanov, D. Bainov; study of the Ince equation, M. Amar, B. Tounsi; trace formula for the Sturm-Liouville operator with singularity, R. Kh. Amirov, Y. Cakmak; inverse spectral problem for the differential equation of the second order with singularity, R. Kh. Amirov, S. Gulyaz; application of the Laplace, Mellin and Stieltjes transformations in the evaluation of integrals, A. Apelblat; asynchronous multisplitting algorithms for differential-algebraic systems discretized by Runge-Kutta methods, J. Bahi, J.C. Miellou; forced oscillations of solutions of parabolic equations of neutral type with maxima, D.Bainov, E. Minchev; on the stability of solutions of impulsive parabolic differential-functional equations, D. Bainov, e. Minchev; approximate analysis of non-cyclic multi-queue systems with Batch Markovian arrival streams, D. Baum; nonlocal problems modelling the formation of shear bands, J. Bebernes; solution of the Dirichlet problem for Laplace equation on domains with analytic boundaries, S. Belov, N. Fujii; ill-conditioning in optima control computation, F. Benyah, L.S. Jennings; differentiability of solutions of an electro-elasticity model w.r.t. parameters, N.D. Botkin; efficient and accurate local time stepping algorithm for multi-rate problems, L. Cao, J. Zhu; improving Laguerre's method to cope with symmetry pitfalls in polynomial root-finding, Tien Chi Chen; a nonlinear wave equation with jumping nonlinearity, Q.H. Choi, T. Jung; regular solutions and stability for the nonlinear thermoviscoelastic system with nonlinear damping on the boundary, A.T. Cousin et al; analytical solutions of the Navier-Stokes equation for the laminar and turbulent boundary layer, over a flat plate, L. D'Attorre; solving singular integral equations, J.H. de Klerk; asynchronous multisplitting methods with flexible communication for pseudolinear P.D.E., D. El Baz et al; on the approximation of an infinite-dimensional linear programming problem, M.H. Farahi; partial Holder continuity results for solutions of nonlinear nonvariational elliptic systems with strictly controlled growth, L. Fattorusso, G. Idone; a structural approach to Toeplitz and Toeplitz-like systems with applications to (semi) elliptic problems, G. Fiorentino; finding Voxels shared by a ray and a linear octree, I. Gargantini, J-Y. Liu. (Part contents).