Mullhaupt, Ph.Srinivasan, B.Bonvin, D.2004-11-262004-11-262004-11-26199810.1109/CDC.1998.762049https://infoscience.epfl.ch/handle/20.500.14299/174791WOS:000079708900900On the Nonminimum-phase Characteristics of Two-link Underactuated Mechanical Systemstext::conference output::conference proceedings::conference paper