A. Kh. Zilbershtein (2022) “First correct Experimental Discovery of "Weak Gyrotropy" of Transparent Non-Centrosymmetric ‘Non-Gyrotropic’ Crystals, Using the LiNbO3 Crystal as an Example”, Research Developments in Science and Technology Vol. 3, pp. 1–7. doi: 10.9734/bpi/rdst/v3/15824D.