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title = {{Quantum Phase Transitions in Interacting Bose Systems}},  booktitle = {Quantum Dynamics of Submicron Structures},  }  @incollection{Sachdev,  doi = {10.1017/cbo9780511973765.005},  url = {http://dx.doi.org/10.1017/cbo9780511973765.005},  publisher = {Cambridge University Press ({CUP})},  pages = {29--44},  author = {Subir Sachdev},  title = {{Classical phase transitions}},  booktitle = {Quantum Phase Transitions},  }