erc: who: Pierce, Kirk what: Advanced Gearless Drivetrain - Phase I Technical Report when: 20120831 where: https://digital.library.unt.edu/ark:/67531/metadc827662/ erc-support: who: University of North Texas Libraries what: Permanent: Stable Content: when: 20081203 where: https://digital.library.unt.edu/ark:/67531/