Extended affine Lie algebras and their root systems /
Allison, Bruce N.(Bruce Normansell),1945-
Providence, R.I. : American Mathematical Society,
c1997.
"March 1997, volume 126, number 603 (fourth of 5 numbers)."
Includes bibliographical references (p. 120-122).
Infinite dimensional Lie algebras.
Kac-Moody algebras.