Rozendorn's Article I'm researching the isometric dips of the hyperbolic plane and in particular I'm interested in reading the results of Rozendorn who proved that the hyperbolic plane is isometrically immersed in $\mathbb R^5$. The demonstrations that I have been able to find in this regard, for example in Gromov's book, do not go with Rozendorn's initial idea, I say it because he demonstrates it in:

but I have not been able to locate that article anywhere. Does anyone know where I can find it? or maybe someone knows other results in the same line of the original demonstration of him?
From what I have been able to read, the proof that Rozendorn gives is based entirely on the functions that Blanusa gives in this Article in which he proved that the hyperbolic plane is isometrically embedded in $\mathbb R^6$.
 A: If you don't read Russian: Rozendorn's construction is presented by Aminov in Extrinsic geometric properties of the Rozendorn surface, which is an isometric immersion of the Lobachevskiĭ plane into $E^5$. Now Aminov's paper was also in Russian, but the article does have an English translation available, which you can find at https://iopscience.iop.org/article/10.1070/SM2009v200n11ABEH004051. On pages 1576-1578 there's a pretty complete reproduction of Rozendorn's arguments.
A: If you don't mind looking at the original Russian version, then the scanned article itself is available at
https://arar.sci.am//Content/23775/file_0.pdf
I found it by searching https://www.google.com/search?q=розендорн+реализация+метрики which shows also some Russian citations of that work.
Update. Perhaps even better, you could read more about this in his later review "Surfaces of Negative Curvature" https://link.springer.com/chapter/10.1007%2F978-3-662-02751-6_2
(translated from Э. Р. Розендорн, Поверхности отрицательной кривизны, Итоги науки и техн. Сер. Соврем. пробл. мат. Фундам. направления, 1989, том 48, 98–195, http://www.mathnet.ru/links/ac4e964b7708b97721d5f6525b93dc36/intf145.pdf section 5.2, p. 180~)
