April 2018

1. 10.29135/std.321692
2. 10.29135/std.339743
3. 10.29135/std.357767
4. 10.29135/std.360135
5. 10.29135/std.391404
6. 10.29135/std.381989
7. 10.29135/std.391638
8. 10.29135/std.407630
9. 10.29135/std.399781
10. 10.29135/std.341475
11. 10.29135/std.409001
12. 10.29135/std.409681