CSS J203937.7-042907: superhump period (I start using CSS identifier when it is available on CRTS Photcat DB query page) CSS J203937.7-042907 = CSS120813:203938-042908 = OT J203937.7-042908 G. Masi and F. Nocentini have reported new observations. The combined data yielded a refined superhump period of 0.11073(5) d.