"A Consistent Finite Element Formulation of the Geometrically Non-linear Reissner-Mindlin Shell Model" of Alexander Müller and Manfred Bischoff has been published in Archives of Computational Methods in Engineering.
The article is now freely available under Open Access at http://dx.doi.org/10.1007/s11831-021-09702-7
The Matlab implementation of the proposed shell formulation has been published via DaRUS: https://doi.org/10.18419/darus-1255.