Vector fields.

Harmonic vector fields[electronic resource] :variational principles and differential geometry / by: (Language materials, printed)

Nonlinear oscillations, dynamical systems, and bifurcations of vector fields / by: (Language materials, printed)

Hörmander operators[electronic resource] / by: (Electronic resources)

Vector fields.

Geometry, Differential.

Vector fields.

Nonlinear oscillations.

Bifurcation theory.

Differentiable dynamical systems.

Vector fields.

Partial differential operators.

Elliptic operators.