A Solvatochromic Method for Determining The First-Order Hyperpolarizabilities of Several New stilbzolium-like Dyes
Zhan Chuan-Lang, Wang Duo-Yuan
Acta Phys. -Chim. Sin. . 1999, (04): 338 -344 .  DOI: 10.3866/PKU.WHXB19990410