V
i
s
n
y
k
o
f
C
h
e
r
n
i
h
i
v
S
t
a
t
e
T
e
c
h
n
o
l
o
g
i
c
a
l
U
n
i
v
e
r
s
i
t
y
S
e
r
i
e
s
"
E
c
o
n
o
m
i
c
s
c
i
e
n
c
e
s
"
ISSN 2225-7543
Home
Search
Archive
Authors
Terms of publication
FAQ
Scientific Library
Name:
Password:
