Erugin, N. P. <br/><br/>
Linear systems of ordinary differential equations  with periodic and quasi-periodic coefficients / 
by Nikolay P. Erugin ; translated by Scripta Technica. 
 - New York :  Academic Press,  1966. 
 - xxi, 271 p. ;  24 cm. 
 - Mathematics in science and engineering ;  v.28 .
 - Mathematics in science and engineering ;  v.28. .
<br/><br/>Bibliography : p. 262-269 
<br/><br/><label>LCCN: </label>66-023935 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations, Linear