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Bu, Y.; Ding, Y.; Liang, X.; Murray, D.S.: Understanding persistent scientific collaboration (2018)
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Pislyakov, V.; Shukshina, E.: Measuring excellence in Russia : highly cited papers, leading institutions, patterns of national and international collaboration (2014)
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Guerci Sidone, O.J.; Haddad, E.A.; Mena-Chalco, J.P.: Scholarly publication and collaboration in Brazil : the role of geography (2017)
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