@article {Mitchell:June 2001:1093-3263:325, author = "Mitchell J.C.", author = "Kerr R.", author = "Ten Eyck L.F.", title = "Rapid atomic density methods for molecular shape characterization1", journal = "Journal of Molecular Graphics and Modelling", volume = "19", year = "June 2001", abstract = "", pages = "325-330(6)", url = "http://www.ingentaconnect.com/content/els/10933263/2001/00000019/00000003/art00079" doi = "doi:10.1016/S1093-3263(00)00079-6" }