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Lyubomir Penev            
Pensoft Publishers & Bulgarian Academy of Sciences
Sofia, Bulgaria
http://www.pensoft.net
30 articles by this author
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PhD Project Plan
Published in: Research Ideas and Outcomes
 11-01-2016
 Unique: 7781 | Total: 16151  | Access Period:
Editorial
Published in: Research Ideas and Outcomes
 17-12-2015
 Unique: 8039 | Total: 16642  | Access Period:

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