1. C.H. Wich, Methods of Cold Forming Ferrous Metals Including Heading, Rolling, Spinning, The Industrial Press, NY, 1960.
2. W. Naser, H. Meichsner, Technologie des Gewinde Walzens, Fachbuchverlag, Leipzig, 1959.
3. T.A. Sultanov, Thread Rolling Heads, Moscow, J. Mashinostroene, 1966 (in Russian).
4. Fette, 1988 (catalogue), pp. 47–111.
5. W.F. Bethlehem, Herstellung von Aussengewinden—Schweizer Maschinenmarkt, N4 (1985) 27–29.