@article {695, title = {Toward improved description of DNA backbone: Revisiting epsilon and zeta torsion force field parameters}, journal = {Journal of Chemical Theory and Computation}, volume = {9}, year = {2013}, pages = {2339-2354}, author = {Zgarbova, M and F. J. Luque and Sponer,J. and Cheatham, T E and Otyepka, M and Jurecka,P.} }