Guillemin, Victor,  1937- <br/><br/>
Deformation theory of pseudogroup structures/ 
Victor Guillemin and Shlomo Sternberg. 
 - Providence, R.I.:  American Mathematical Society,  1966. 
 - 80 p.:  26 cm. 
 - Memoirs of the American Mathematical Society;  no. 64. .
<br/><br/> Cover title. 
<br/><br/>Bibliography: p. 78-80. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry, Differential.<br/>Group theory.