Citation: Andreas Loosli; Markus Wermuth; Hans-Ueli G\"udel; Silvia Capelli; J\"urg Hauser; Hans-Beat B\"urgi (2000). Crystal Structure and Optical Spectroscopy of Er~2~[Pt(CN)~4~]~3~.21H~2~O and Er~2~[Pt(CN)~4~]~2~.SO~4~.11.5H~2~O. Inorganic Chemistry, 39, pp. 2289-2293.