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University of Lódz
Faculty of Mathematics.
University of Warsaw
Institute of Mathematics.
Wroclaw University
Institute of Mathematics.
Adam Mickiewicz University, Poznañ
Faculty of Mathematics and Computer Science.
Technical University of Gdansk
Faculty of Applied Physics and Mathematics.
Nicholas Copernicus University, Torun
Faculty of Mathematics and Computer Science.
Warsaw University of Technology
Faculty of Mathematics and Computer Science.
Jagiellonian University, Kraków
Faculty of Mathematics and Computer Science.
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