@Misc{PVH09a, author = {Pieroni, E. and Valentini, M. and Hofmann, D.}, title = {What kind of atoms are there? natural atomic types from pdb and their relevance for structural modeling}, year = {2009}, keywords = {Bioinformatics}, url = {https://publications.crs4.it/pubdocs/2009/PVH09a}, }