@article{KlieglBates2011,
  author    = {Kliegl, Reinhold and Bates, Douglas},
  title     = {International collaboration in psychology is on the rise},
  series = {Scientometrics : an international journal for all quantitative aspects of the science of science, communication in science and science policy},
  volume    = {87},
  journal   = {Scientometrics : an international journal for all quantitative aspects of the science of science, communication in science and science policy},
  number    = {1},
  publisher = {Springer},
  address   = {Dordrecht},
  issn      = {0138-9130},
  doi       = {10.1007/s11192-010-0299-0},
  pages     = {149 -- 158},
  year      = {2011},
  abstract  = {There has been a substantial increase in the percentage for publications with co-authors located in departments from different countries in 12 major journals of psychology. The results are evidence for a remarkable internationalization of psychological research, starting in the mid 1970s and increasing in rate at the beginning of the 1990s. This growth occurs against a constant number of articles with authors from the same country; it is not due to a concomitant increase in the number of co-authors per article. Thus, international collaboration in psychology is obviously on the rise.},
  language  = {en}
}