1. M. I. Zelikin, Homogeneous Spaces and the
Riccati Equation in the Calculus of Variations (Faktorial, Moscow, 1998)
[in Russian].
2. F. A. Chernous’ko and V. B. Kolmanovskii, Optimal Control under Random Perturbations (Nauka, Moscow,
1978) [in Russian].
3. L. V. Ovsyannikov, Lectures on the
Fundamentals of Gas Dynamics (Izhevsk Institute of Computer Science,
Moscow–Izhevsk, 2003) [in Russian].
4. A. P. Chupakhin, “Barochronous Gas Motions: General Properties and
Submodels of Types $$(1,2)$$ and
$$(1,1)
$$,” Preprint No. 4–98 (Lavrentyev Institute of
Hydrodynamics, Novosibirsk, 1998).
5. A. P. Chupakhin, “Nonbarochronous Submodels of Types $$(1,2)
$$ and $$(1,1)
$$ of the Gas Dynamics Equations,” Preprint
No. 1–99 (Lavrentyev Institute of Hydrodynamics, Novosibirsk, 1999).