One of the features of modern science is the formation of stable large collaborations of researchers working together within the projects that require the concentration of huge financial and human resources. Results of such common work are published in scientific papers by large co-authorship teams that include sometimes thousands of names. The goal of this work is to study the influence of such publications on the values of scientometric indicators calculated for individuals, research groups and science of Ukraine in general. Bibliometric data related to Ukraine, some academic institutions and selected individual researchers were collected from Scopus database and used for our study. It is demonstrated that while the relative share of publications by collective authors is comparatively small, their presence in a general pool can lead to statistically significant effects. The obtained results clearly show that traditional quantitative approaches for research assessment should be changed in order to take into account this phenomenon. Keywords: collective authorship, scientometrics, group science, Ukraine.

中文翻译：

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乌克兰科学的集体作者：边际效应还是新现象？

现代科学的特征之一是在需要集中大量财力和人力资源的项目中形成稳定的大型研究人员合作。这种共同工作的结果由大型合着团队发表在科学论文中，有时包括数千个名字。这项工作的目标是研究此类出版物对为乌克兰个人、研究团体和科学计算的科学计量指标值的影响。与乌克兰、一些学术机构和选定的个人研究人员相关的文献计量数据是从 Scopus 数据库收集的，并用于我们的研究。研究表明，虽然集体作者发表的相对份额相对较小，它们出现在一般池中会产生统计上的显着影响。获得的结果清楚地表明，为了考虑到这一现象，应该改变传统的研究评估定量方法。关键词：集体著作权，科学计量学，群体科学，乌克兰。