Schouten, J. A.  b. 1883. <br/><br/>
Pfaff's problem and its generalizations/ 
by J.A. Schouten and W. van der Kulk. 
 - Oxford:  Clarendon Press,  1949. 
 - xvi, 542 p.:  25 cm. 
<br/><br/>Bibliography: p. [534]-536. 
<br/><br/><label>LCCN: </label>49009128 //r862 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pfaff's problem
<br/><br/><label>Dewey Class. No.: </label>515.35  / S376p