Comments on the paper Growth and Characterization of Pure and Thiourea-Doped L-Alanine Single Crystals for NLO Devices

Bikshandarkoil R. Srinivasan, S. Natarajan

we show that the pure and thiourea-doped glycyl-L-alanine hydrochloride (GLAH and TU-GLAH) crystals claimed to have been grown by the authors of the title paper (Journal of Russian…