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The European physical journal / C, 80 (2020) 11, S. 1053
...2020...
OpenAccess 
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3
Progress of theoretical and experimental physics, 2020 (2020) 8, S. 083C01
...2020...
OpenAccess 
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International journal of modern physics / A, 35 (2020) 05, S. 2050019 -
...2020...
OpenAccess 
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