Volume 16, No 2, 2009
Content

Ts. C.-D. Batueva
Arithmetical closure of two dimensional toeplitz words
P. 3–15

O. V. Borodin, A. O. Ivanova
Near-proper vertex 2-colorings of sparse graphs
P. 16–20

I. L.Vasiliev, K. B. Klimentova
A branch and bound method for the facility location problem with customer preferences
P. 21–41

S. A. Volkov
The class of skolem elementary functions
P. 42–60

A. B. Dainiak
On the number of independent sets in trees of fixed diameter
P. 61–73

V. A. Emelichev, O. V. Karelkina
On quasistability of a lexicographic MINSUM arrangement problem
P. 74–84

D. S. Malyshev
Boundary classes of graphs for some recognition problems
P. 85–94