Sychova, A. M. Theory of determining the frequency of natural oscillations of span structures / A. M. Sychova, S. V. Zarin, A. V. Matskevich. — 1 файл (1,01 Мб). — DOI 10.18720/MCE.98.3. — Текст: электронный // Magazine of Civil Engineering. – 2020. – № 6 (98). — С. 9803. — Загл. с титул. экрана. — Свободный доступ из сети Интернет (чтение, печать, копирование). — <URL:http://elib.spbstu.ru/dl/2/j21-186.pdf>.
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Period
|
Read
|
Print
|
Copy
|
Open
|
Total
|
|
Year 2021
|
Quarter 1
|
March
|
1
|
0
|
3
|
0
|
4
|
|
Quarter 2
|
April
|
3
|
0
|
2
|
0
|
5
|
|
May
|
5
|
0
|
6
|
0
|
11
|
|
June
|
7
|
0
|
7
|
0
|
14
|
|
Quarter 3
|
July
|
2
|
0
|
4
|
0
|
6
|
|
August
|
4
|
0
|
6
|
0
|
10
|
|
September
|
2
|
0
|
1
|
0
|
3
|
|
Quarter 4
|
October
|
1
|
0
|
1
|
0
|
2
|
|
November
|
1
|
0
|
1
|
0
|
2
|
|
December
|
0
|
0
|
0
|
0
|
0
|
|
Total
|
26
|
0
|
31
|
0
|
57
|
