TY - DATA AU - Boris Kruglikov, Valentin Lychagin, Eldar Straume TI - Differential Equations - Geometry, Symmetries and Integrability SN - 9783642008733 PY - 2009/// PB - Springer Berlin Heidelberg KW - Mathematics and Statistics UR - https://doi.org/10.1007/978-3-642-00873-3 ER -