@Article{149490,
     author = "Boris A. Rozenfeld, Aszot T. Grigorjan",
     title = "Mechanika nieeuklidesowa ",
     year =  1971,
     volume =  16,
     number =  2,
     journal =  Kwartalnik Historii Nauki i Techniki,
     pages =  s. 273-280,
    }