Mixed solvent crystal development, structural, spectral, theoretical insights, linear, and non-linear optical qualities of N,N′-diphenylguanidinium phthalate. - Gandhi, Saravana Kumar; Boukabcha, Nourdine; Belhachemi, Mohammed Hadj Mortada; Benyahlou, Zohra Douaa; Chouaih, Abdelkader (Journal of Materials Science: Materials in Electronics, 2025)