FACTA
UNIVERSITATIS
SERIES
MATHEMATICS
AND INFORMATICS, Vol. 13, 1998
Contents

Z. Marković
Intuitionistic
and Classical Satisfability in Kripke Models 
Ž. Mijajlović and Z. Marković
Some Recurrence
Formulas to the Differential Operator 0D 
V.Yu. Protasov
Generalisation
of the Joint Spectral Radius: The Geometrical Approach 
G.B. Đorđević
Polynomials
Related to Gegenbauer Polynomials 
S. Pilipović and M. Stojanović
Generalized
Goursat Problem and the Quasiasymptotics of a Solution 
A. Tali
On Convex
Families of Summability Methods 
Lj.M. Kocić and B. Della Vecchia
Degeneracy
of Positive Linear Operators 
Y.L. Nosenko
Approximation
of the Function by Fourier Series 
E. Bairamov and A.O. Celebi
Spectral Analysis
of Nonselfadjoint Schrodinger Operators With Spectral Parameter in Boundary
Conditions 
D.M. Milošević and Lj.M. Kocić
Fractal Surfaces
Leveling 
S. Janković and M. Jovanović
A General
Algorithm for Solving Stochastic Hereditary Integrodifferential Equations 
M.R. Capobianco and N. Mastronardi
A Numerical
Method for a Volterratype Integral Equations With Logarithmic Kernel 
K. Stevanović Hedrih
Derivatives
of the Mass Moment Vectors at the Dimensional Coordinate System N 
V. Stojanović, S. Radovanović
and J. Bogdanović
Least Squres
Approximation of Multiport Network Parameters by Rational Functions 