Копелевич, Фаина Ильинична. Дифференциальные уравнения. Ч. 2. Примеры и типовые задания / Копелевич Ф. И., Оханцева И. В.; Санкт-Петербургский политехнический университет Петра Великого. — Санкт-Петербург, 2021. — 1 файл (0,69 Мб). — Загл. с титул. экрана. — Свободный доступ из сети Интернет (чтение). — <URL:https://elib.spbstu.ru/dl/5/tr/2021/tr21-66.pdf>. — DOI 10.18720/SPBPU/5/tr21-66. — Текст: электронный
|
Period
|
Read
|
Print
|
Copy
|
Open
|
Total
|
|
Year 2021
|
Quarter 2
|
April
|
4
|
0
|
0
|
0
|
4
|
|
May
|
1
|
0
|
0
|
0
|
1
|
|
June
|
2
|
0
|
0
|
0
|
2
|
|
Quarter 3
|
July
|
3
|
0
|
0
|
0
|
3
|
|
August
|
3
|
0
|
0
|
0
|
3
|
|
September
|
9
|
0
|
0
|
0
|
9
|
|
Quarter 4
|
October
|
0
|
0
|
0
|
0
|
0
|
|
November
|
2
|
0
|
0
|
0
|
2
|
|
December
|
4
|
0
|
0
|
0
|
4
|
|
Year 2022
|
Quarter 1
|
January
|
0
|
0
|
0
|
0
|
0
|
|
February
|
0
|
0
|
0
|
0
|
0
|
|
March
|
2
|
0
|
0
|
0
|
2
|
|
Quarter 2
|
April
|
1
|
0
|
0
|
0
|
1
|
|
May
|
6
|
0
|
0
|
0
|
6
|
|
June
|
3
|
0
|
0
|
0
|
3
|
|
Quarter 3
|
July
|
3
|
0
|
0
|
0
|
3
|
|
August
|
4
|
0
|
0
|
0
|
4
|
|
September
|
3
|
0
|
0
|
0
|
3
|
|
Quarter 4
|
October
|
2
|
0
|
0
|
0
|
2
|
|
November
|
6
|
0
|
0
|
0
|
6
|
|
December
|
6
|
0
|
0
|
0
|
6
|
|
Year 2023
|
Quarter 1
|
January
|
3
|
0
|
0
|
0
|
3
|
|
February
|
4
|
0
|
0
|
0
|
4
|
|
March
|
6
|
0
|
0
|
0
|
6
|
|
Quarter 2
|
April
|
2
|
0
|
0
|
0
|
2
|
|
May
|
5
|
0
|
0
|
0
|
5
|
|
June
|
4
|
0
|
0
|
0
|
4
|
|
Quarter 3
|
July
|
4
|
0
|
0
|
0
|
4
|
|
August
|
6
|
0
|
0
|
0
|
6
|
|
September
|
2
|
0
|
0
|
0
|
2
|
|
Quarter 4
|
October
|
3
|
0
|
0
|
0
|
3
|
|
November
|
7
|
0
|
0
|
0
|
7
|
|
December
|
2
|
0
|
0
|
0
|
2
|
|
Year 2024
|
Quarter 1
|
January
|
5
|
0
|
0
|
0
|
5
|
|
February
|
4
|
0
|
0
|
0
|
4
|
|
March
|
1
|
0
|
0
|
0
|
1
|
|
Quarter 2
|
April
|
6
|
0
|
0
|
0
|
6
|
|
Total
|
128
|
0
|
0
|
0
|
128
|
