Citation: Hurst, Stephanie K.; Cifuentes, Marie P.; Morrall, Joseph P. L.; Lucas, Nigel T.; Whittall, Ian R.; Humphrey, Mark G.; Asselberghs, Inge; Persoons, Andr\'e; Samoc, Marek; Luther-Davies, Barry; Willis, Anthony C. (2001). Organometallic Complexes for Nonlinear Optics. 22.1Quadratic and Cubic Hyperpolarizabilities oftrans-Bis(bidentate phosphine)ruthenium \s-Arylvinylidene and \s-Arylalkynyl Complexes. Organometallics, 20, pp. 4664-.