MAGNETIC TREATMENT OF FERROMAGNETIC MATERIAL
A Standard patent application filed on 22 July 1983 credited to Makedonski, Boris Georgiev
;
Blaskov, Yanaki Rostislovov
;
Todorov, Nedelcho Hristov
;
Atanassov, Haralampi Angelov
;
Alipiev, Lyubomir Pavlov