@conference {2008|1545, title = {OPERA: An OPtimized coarsed-grained Energy model for RnA}, booktitle = {Publication Series of the John von Neumann Institute for Computing NIC Series}, volume = {40}, year = {2008}, pages = {185{\textendash}187}, author = {C. Colas and Phuong Hoang Nguyen and J-C. Gelly and Philippe Derreumaux} }