
Survey article 

Limit cycles in continuous and discontinuous piecewise linear differential systems with two pieces separated by a straight line Jaume Llibre  pp.312 

Research articles 

The problem of the center for cubic differential systems with the line at infinity and an affine real invariant straight line of total algebraic multiplicity five Şubă Alexandru, Silvia Turuta  pp.1340 
The topological classification of a family of quadratic differential systems in terms of affine invariant polynomials Dana Schlomiuk, Vulpe Nicolae  pp.4155 
Levitan Almost Periodic Solutions of Infinitedimensional Linear Differential Equations David Cheban  pp.5678 
The classification of a family of cubic differential systems in terms of configurations of invariant lines of the type (3,3) Bujac Cristina  pp.7998 
On the upper bound of the number of functionally independent focal quantities of the Lyapunov differential system Popa Mihail, Pricop Victor  pp.99112 
On limit cycles of polynomial systems of the firstorder ODEs Driuma Valeriu  pp.11326 
Sufficient GL(2,R)invariant center conditions for some classes of twodimensional cubic differential systems. Calin Iurie, Baltag Valeriu  pp.127136 
Invariant conditions of stability of unperturbed motion governed by critical differential systems s(1,2,3) Natalia Neagu, Orlov Victor, Popa Mihail  pp.137153 

Events, anniversary dates 

Working with professor Nicolae Vulpe Dana Schlomiuk  pp.154160 