Interesting since the first mention of what we now call stealth technology was a paper published in an obscure soviet mathematics journal during the cold war that hypothesized the clever arrangement of surfaces to minimize radar echos, that was noticed by US researchers who ran with the idea.
Dr Petr Ufimtsev was the Soviet physicist who derived the equations for defusing radar signals away from their source. He took his work to the Kremlin who concluded that it had no military relevance whatsoever and allowed him to put it in the public domain. The rest is history.