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Nikolaos E. Karkalos, Nikolaos Efkolidis, Panagiotis Kyratsis and Angelos P. Markopoulos
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Andrzej Dzierwa and Angelos P. Markopoulos
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Panagiotis Kyratsis, Angelos P. Markopoulos, Nikolaos Efkolidis, Vasileios Maliagkas and Konstantinos Kakoulis
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Angelos P. Markopoulos, Nikolaos I. Galanis, Nikolaos E. Karkalos and Dimitrios E. Manolakos
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