Description
Item Description:"February 21, 1991"--Leaf 1.
"Partially supported by the Army Research Office through the Mathematical Science Institute at Cornell University and by NSF Grant DMS-9002791...[and] NSF Grant DMS-9001011"--Leaf 1.
Physical Description:26 leaves, 7 unnumbered leaves : illustrations ; 28 cm
Bibliography:Includes bibliographical references (leaves 25-26).