%0 Journal Article %T Maurer - Cartan Forms of the Symmetry Pseudo-Group and the Covering of Plebanski's Second Heavenly Equation %A Oleg I. Morozov %J Mathematics %D 2009 %I arXiv %X We derive Wahlquist - Estabrook forms of the covering of Plebanski's second heavenly equation from Maurer - Cartan forms of its symmetry pseudo-group. %U http://arxiv.org/abs/0902.0086v1