Simmonds, James G. <br/><br/>
A first look at perturbation theory/ 
by James G. Simmonds and James E. Mann, Jr. 
 - Original ed. 
 - Malabar, Fla.:  R. E. Krieger,  1986. 
 - vii, 136 p.:  ill.;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 127. 
<br/><br/><label>ISBN: </label>089874816X 
<br/><br/><label>LCCN: </label>84020181 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations---Numerical solutions.<br/>Approximation theory.<br/>Perturbation (Mathematics)-
<br/><br/><label>Dewey Class. No.: </label>515.35  / S592f