“…Furthermore, new gradientenriched elasticity models, such as complete anisotropic strain-gradient elasticity [14,15], spatial-temporal nonlocal homogenisation models [16,17] and dispersive gradient elasticity with multiple micro-inertia terms [18,19], have increased the versatility of the gradient elasticity modelling framework. In parallel, procedures for the identification of model coefficients, including higher-order length scales, have been presented in [20,21,22]. An overview of formulations and length scale identification procedures can be found in [23].…”