Media type: E-Article Title: Viscoplastic flow due to penetration: a free boundary value problem Contributor: Ang, Dang Ding; Folias, Tim; Keinert, Fritz; Stenger, Frank imprint: Springer Science and Business Media LLC, 1989 Published in: International Journal of Fracture Language: English DOI: 10.1007/bf00047445 ISSN: 0376-9429; 1573-2673 Keywords: Mechanics of Materials ; Modeling and Simulation ; Computational Mechanics Origination: Footnote: