deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index d72d87d..d4dcb2f 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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title = {{Linear and nonlinear response functions for an exact state and for an {MCSCF} state}},  journal = {The Journal of Chemical Physics},  }  @article{Christiansen_1998,  doi = {10.1002/(sici)1097-461x(1998)68:1<1::aid-qua1>3.3.co;2-f},  url = {http://dx.doi.org/10.1002/(sici)1097-461x(1998)68:1<1::aid-qua1>3.3.co;2-f},  year = {1998},  publisher = {Wiley-Blackwell},  volume = {68},  number = {1},  pages = {1--52},  author = {Ove Christiansen and Poul J{\o}rgensen and Christof Hättig},  title = {{Response functions from Fourier component variational perturbation theory applied to a time-averaged quasienergy}},  journal = {Int. J. Quant. Chem.},  }