Text ( visual ) : unmediated Connections, definite forms, and four-manifolds / Ted Petrie and John Randall. -- Oxford : Clarendon Press ; New York : Oxford University Press , 1990. -- ix, 131 p. ; 25 cm. -- (Oxford mathematical monographs). -- Includes bibliographical references (p. 125-126) and index. -- ISBN 0198535996 ; (BA11654953) ; https://ci.nii.ac.jp/ncid/BA11654953 Author Heading(s): Petrie, Ted ; Randall, John D.. -- Classification(s): LCC : QA649 ; DC20 : 516.3/5 ; NDC8 : 414.7 ; NDC7 : 414.6. -- Subject Heading(s): LCSH : Connections (Mathematics) ; LCSH : Four-manifolds (Topology) ; LCSH : Moduli theory