A shear deformable, rotation-free isogeometric shell formulation Oesterle, Bastian ; Ramm, Ekkehard ; Bischoff, Manfred Abstract Publication: Computer Methods in Applied Mechanics and Engineering Pub Date: August 2016 DOI: 10.1016/j.cma.2016.04.015 Bibcode: 2016CMAME.307..235O