Quantifying geometric measure of entanglement by mean value of spin and spin correlations with application to physical systemsAndrzej M. Frydryszak, Mykola I. Samar and Volodymyr M. TkachukEur. Phys. J. D, 71 9 (2017) 233DOI: https://doi.org/10.1140/epjd/e2017-70752-3