http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Knots and links in three-dimensional flows
Robert W. Ghrist, Philip J. Holmes, Michael C. Sullivan.
Includes bibliographical references (pages [192]-204) and index.
Flows (Differentiable dynamical systems)
Lecture notes in mathematics (Springer-Verlag) ; 1654