Vietnam Journal
of
MATHEMATICS
Vol. 30, Number 1, 2002
Persistence in a Model of
PredatorPrey Population Dynamics with the Action of a Parasite in Almost
Periodic Environment 
1 
On a Perturbed Boundary
Optimal Control System 
15 
On a Class of Locally Supersoluble Groups 
25 
On Eventually and
Asymptotically Lipschitzian Mappings 
31 
pAdic PoissonJensen Formula in Several Variables

43 
New Lagrange Multipliers Rules for
Constrained Quasidifferentiable Optimization 
55 
Iterative Method for Solving a
Boundary Value Problem for Triharmonic Equation

71 
A Stable Marching Difference
Scheme for an IllPosed Cauchy Problem for the ThreeDimensional Laplace
Equation 
79 
Fractal Langevin
Equation 
89 
97 