Ruelgger, Heinz <br/><br/>
Application of a new set of canorical elements to the three dimensional restricted problem of three bodies / 
Heinz Rueegger 
 - Zurich :  Aku-fotdruck,  [n.d.] 
 - 72 p. :  ill., chart ;  21 cm. 
<br/><br/> Thesis submitted for the doctoral degree of mathematics 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Perturbation (Mathematics)<br/>Three-body problem
<br/><br/><label>Dewey Class. No.: </label>512.82