Bruno, Alexander D. <br/><br/>
Local Methods in Nonlinear Differential Equations.  Part. 1,  The Local Method of Nonlinear Analysis of Differential Equations. Part 2. The Sets of Analyticity of a Normalizing Transformation / 
Alexander D. Bruno ; transl. from. the Rus. 
 - Berlin :  Springer-Verlag,  1989. 
 - X, 348 s. :  24 cm. 
<br/><br/>bibliogr. 
<br/><br/><label>ISBN: </label>3540189262 
<br/><br/><label>Uniwersalna Klasyfikacja Dziesiętna: </label> 517.957