1. J. Kempner: Viscoelastic Buckling, in W. Flügge (ed.), Handbook of Engineering Mechanics (New York: McGraw-Hill, 1962 ), Chap. 54.
2. J. Kempner: Creep Bending and Buckling of Linearly Viscoelastic Columns. NACA, Techn. Note 3136 (1954). (Considers the four-parameter fluid and materials of lower order.)
3. J. Hult: Oil Canning Problems in Creep, in N.J. Hoff (ed.), Creep in Structures ( Berlin: Springer-Verlag, 1962 ), pp. 161 – 173.