Yu. Sachkov , E. F. Sachkova, The structure of abnormal extremals in a sub-Riemannian problem with growth vector (2, 3, 5, 8)

Title: The structure of abnormal extremals in a sub-Riemannian problem with growth vector (2, 3, 5, 8)
Authors: Yu. Sachkov , E. F. Sachkova
Journal title: Sb. Math.
Year: 2020
Issue: 10
Volume: 211
Pages: 112—138