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title = {{Tricritical O(n) models in two dimensions}},  journal = {Physical Review E},  }  @article{Duplantier_1987,  doi = {10.1103/physrevlett.59.539},  url = {http://dx.doi.org/10.1103/physrevlett.59.539},  year = {1987},  month = {Aug},  publisher = {American Physical Society (APS)},  volume = {59},  number = {5},  pages = {539-542},  author = {Bertrand Duplantier and Hubert Saleur},  title = {{Exact tricritical exponents for polymers at the FTHETA point in two dimensions}},  journal = {Phys. Rev. Lett.},  }