Structurally stable quadratic vector fields /
Artés, Joan C.,1961-
Kooij, Robert E.,1963-
Llibre, Jaume.
American Mathematical Society.
Providence, R.I. : American Mathematical Society,
1998.
"July 1998, volume 134, number 639 (fifth of 6 numbers)."
Includes bibliographical references (p. 107).
Differential equations
Stability.
Vector fields.