Faupin, J. <br/><br/>
Second order perturbation theory for embedded eigenvalues / 
J. Faupin, J. S. Møller, E. Skibsted ; University of Aarhus, Department of Mathematics. 
 - Aarhus :  Aarhus Universty, Department of Mathematical Sciences,  2010. 
 - 32 p. 
 - Preprint Series  No. 5 (2010)  1397-4076 .
<br/><br/> Title from cover 
<br/><br/>Bibliogr.: p. 31-32 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical Physics<br/>Mathematics--Spectral Theory