McGraw, Joshua D Contact Dependence and Velocity Crossover in Friction between Microscopic Solid/Solid Contacts. [electronic resource] - Nano letters 10 2017 - 6335-6339 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1530-6992 Standard No.: 10.1021/acs.nanolett.7b03076 doi