E.L. Feinberg Lebedev Physical Institute, Russian Academy of Sciences, Leninsky prosp. 53, Moscow, 119991, Russian Federation
PACS:96.50.sb, 14.65.−q, 11.30.Ly, 95.30.Cq () DOI: URL: https://ufn.ru/en/articles/1967/2/i/ Citation: Feinberg E L "The problem of quarks in cosmic rays" Sov. Phys. Usp.10 256–261 (1967)