Werner Marx, Manuel Cardona. The citation impact outside references - formal versus informal citations. Scientometrics, 80(1):1-21, 2009. [doi]
@article{MarxC09,
title = {The citation impact outside references - formal versus informal citations},
author = {Werner Marx and Manuel Cardona},
year = {2009},
doi = {10.1007/s11192-008-1824-2},
url = {http://dx.doi.org/10.1007/s11192-008-1824-2},
researchr = {https://researchr.org/publication/MarxC09},
cites = {0},
citedby = {0},
journal = {Scientometrics},
volume = {80},
number = {1},
pages = {1-21},
}