The "Slavyanka" technology was noted down by a publication in a specialized German periodical

In Karlsruhe, Germany, the days of specialized periodicals were celebrated during which the speakers, representatives of German science and technology institutions and industrial enterprises made presentations.
Among them was Hans-Jürgen Kastner, winner of the "Crazy Automation Award" that German journalists give to the best innovators of the year.

Several years ago, Kastner together with Victor Arestov were searching for individuals and businesses interested in modernizing electric motors using the "Slavyanka" technology in Germany. They conducted about a dozen of tests and participated in various exhibitions.
Then Victor went to China where the potential of Duyunov's motors was given a high estimate very soon and got support at the governmental level.

Kastner continued to apply and present the "Slavyanka" technology on the territory of Germany. This year, his activity aimed at energy saving through the use of combined winding has been noted in the professional community. Hans-Jürgen Kastner gave an interview to a German periodical in which he spoke about the advantages of the "Slavyanka" technology, the project "Duyunov's motors", and his collaboration with Victor Arestov.

The article was published in the printed April issue of the famous scientific and technology journal "Konstruktion 3333 Entwicklung".
A scanned copy of the original publication in German is available here - https://clck.ru/MtQMm
Read the article translated into Russian here — https://clck.ru/MtQC2

We should also add that the innovation award and interview in a reputable print media are events that contribute to the recognition of Duyunov's technology by the professional community in Germany.