Author

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Evgenija Popova
Bulgarian Academy of Sciences
Bulgaria
3 articles by this author
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Research Article
 Unique: 348 | Total: 404  | Access Period:
 48-67
Research Article
 Unique: 350 | Total: 390  | Access Period:
 23-41
Research Article
 Unique: 427 | Total: 501  | Access Period:
 560-569

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