@INPROCEEDINGS{Valasek2017IncreaseStiffnessPhysically, author = {Val{\'a}{\v s}ek, M. and Ne{\v c}as, M. and Mr{\'a}z, L.}, title = {Increase of Stiffness in Physically Cooperating Robots}, booktitle = {ECCOMAS Thematic Conference on Multibody Dynamics}, address = {Prague, Czech Republic}, pages = {577--586}, year = {2017}, month = {June} }