The single publication H-index and the indirect H-index of a researcher

@article{Egghe2011TheSP,
  title={The single publication H-index and the indirect H-index of a researcher},
  author={Leo Egghe},
  journal={Scientometrics},
  year={2011},
  volume={88},
  pages={1003-1004}
}
The single publication H-index, introduced by A. Schubert in 2009 can be applied on all articles in the Hirsch-core of a researcher. In this way one can define the “indirect H-index” of a researcher.