Text ( visual ) : unmediated Contributions in mathematical physics : a tribute to Gerard G. Emch / edited by S. Twareque Ali, Kalyan B. Sinha. -- New Delhi : Hindustan Book Agency , c2007. -- xviii, 217 p. : ill. ; 25 cm. -- Includes bibliographical references. -- ISBN 9788185931791 ; (BA83272613) ; https://ci.nii.ac.jp/ncid/BA83272613 Author Heading(s): Ali, S. Twareque ; Sinha, Kalyan B.