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title = {{Bridging the gap between thermodynamic integration and umbrella sampling provides a novel analysis method: {\textquotedblleft}Umbrella integration{\textquotedblright}}},  journal = {J. Chem. Phys.},  }  @article{Ka_stner_2006,  doi = {10.1063/1.2206775},  url = {http://dx.doi.org/10.1063/1.2206775},  year = {2006},  publisher = {{AIP} Publishing},  volume = {124},  number = {23},  pages = {234106},  author = {Johannes Kästner and Walter Thiel},  title = {{Analysis of the statistical error in umbrella sampling simulations by umbrella integration}},  journal = {J. Chem. Phys.},  }