1990, f. 4, tomul XXXVI

Tuccillo, F.: On a class of groups whose lattice of normal subgroups is distributive, p. 305
Dutta, T.K.; Adhikari, N.C.: On Γ-division ring, p. 313
Nicolaescu, L.I.; Cașcaval, R.A.: Weaker characterizations of the limit of a function, p. 319
Turinici, M.: A monotone version of the variational Ekeland’s principle, p. 329
Morchalo, J.: On (ψ. L_p) – stability of nonlinear systems of differential equations, p. 353
Korczak, J.; Popenda, J.: Oscillatory and nonoscillatory solutions of difference equations, p. 461
Bereketoglu, H.: On the boundedness and the stability of some differential equations of the fourth order, p. 371
El-Sheikh, M.M.A.; Ammar, A.A.: On the stability and bifurcation of solution of a general SEIR epidemiological model, p. 379
Oproiu, V.: The C-projective curvature of some real hypersurfaces in complex space forms, p. 385
Oproiu, V.: A global invariant of the symplectic manifolds, p. 393
Boju, V.; Funar, L.: Deformations of 4-manifolds, p. 397
Baikoussis, C.; Koufogiorgos, T.: Pairs of metrics and Codazzi tensors on manifold, p. 403
Stavre, P.; Vîrlan, I.: On D-connections on TM, p. 411
Mukhopadhyay, S.; Barua, B.: A note on the projective curvature tensor of a semisymmetric recurrent metric connection on a Riemannian manifold, p. 415
Sinha, B.B.; Ansari, M.M.: Finslerian quasi-connections, p. 419
Book Reviews, p. 425