Semistability of amalgamated products and HNN-extensions /
Mihalik, Michael L.,1951-
Tschantz, Steven Thomas.
Providence, RI : American Mathematical Society,
1992.
"July 1992, volume 98, number 471 (second of 4 numbers)."
Includes bibliographical references (p. 85-86).
Geometric group theory.
HNN-extensions.
Free products (Group theory)