1. 1) Z. WUSATOBSKI: Fundamentals of rolling (1969) p.84, p.107
2. 2) S.G. NEKRASOV: Izvest. VUZ Chern. Met., (1961) 12, p.83
3. 4) M.L. ZAITSEV: Stal in English, (1968) 12, p.1037
4. 5) M.L. ZAITSEV and G.V. ANUFRIEV: Stal in English, (1969) 8, p.727
5. 6) V.K. SMIRNOV, V.A. SHIROV and I. Ya. TARNOBSKI: Stal in English, (1970) 3, p.101