Hentosh OE, Prykarpatskyy YA, Balinsky AA, Prykarpatski AK. Geometric structures on the orbits of loop diffeomorphism groups and related “heavenly-type” Hamiltonian systems. I. Ukr. Mat. Zhurn. [Internet]. 2022 Oct. 4 [cited 2025 Dec. 5];74(8):1029-5. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/6614