1991



No 8.    N. Boboc, Gh. Bucur: Compression and dilation operators on excessive structures

No 9.    N. Boboc, Gh. Bucur: Recurrence and transience in excessive structure

No 10.    L. Beznea, N. Boboc: Absorbent, parabolic, elliptic and quasielliptic balayages in H-cones. II; The relation with the Green function.