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3. Ness Nathan . Time Dependent Buckling of a Uniformly Heated Column. N.A.C.A. T.N. 3139, January 1954; also P.I.B.A.L. Report No. 192, October 1951.
4. Influence of Primary Creep on Column Buckling;Odqvist;Journal of Applied Mechanics,1954
5. Kempner Joseph . Creep Bending and Buckling of Non-Linear Visco-Elastic Columns. N.A.C.A. T.N. 3137, January 1954; also P.I.B.A.L. Report No. 200, May 1952.