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RINGS

The Stress and deflection of uniformly and axially loaded rings,

by II-L. Mllner. Flight, London, May 27, 1952, v. 24, no- 22, p. 468a-468e- illus.

Circular ring v:ith concentrated loads, by H.Y/. Sibert- Washington, U-S- Govt. print- off-, 1952.    3 p. illus. (Air corps In

formation circular no. 673) (Air corps technical report no. 3522)

Solution of the circular ring, by Roy A. Miller. Airr/ay age,

New York, May 2, 1931, v. 12, no. 2, p. 465-68. illus.

Sur une classe particuliere de Solutions au problfeme de la

couronne circulaire, par R. Chambaud. C.R. Aoad. sci.,

Paris, June 7, 1926, v. 182, no. 23, p. 1382-84.

Distribution of stresses in a circular ring compressea by two forces acting along a diameter, by S. Timoshenko. London, Edinburgh and Dublin philosophical magazine and journal of science, London, Nov. 1922, ser. 6, v. 44, p. 1014-19.

RODS AND LARS

Knickfestigkeit eines ebenen systems beliebig vieler stS.be, die in einem knotenpunkt zusamnenstossen, von K. Ludwig.

Z.A.M.M.? Berlin, Dec. 1938, v. 18, no. 6, p. 373-74. illus.

Ćtude de la sollicitation longitudinale, par choc ou par effort

brusąuement appliąue, d*une barre prismatiąue, par L. Leloup, Revue universelle des mines, Liege, Belgium, Aug.-Sep. 1938, v. 14, no. 8-9, p. 637-49; 688-98.

Torsion of a prismatic bar which is simultaneously subjected to tensicn, by p.M. Riz and N.V. Zvolinsky. Comptes rendus de 1'Academie des Sciences de l^fU.S.S.R., Moscow, July 25, 1938, v. 20, no. 2-3, p. 101-04.

Der Elastisch eingespannte knickstab, von J. Cassens. Luftfahrt-forschung, MUnchen unó Berlin, Oct. 12, 1837, v. 14, no. 10, p. 501-10. illus., tables.

Drillknicken zentrisch geórUckter stcibe mit offenern profil im elastischen bereich, von R. Kappus. Luftfahrtforschung, MUnchen, Sep. 1937, v. 14, no. 9, p. 444-57. illus.

Charts for checking the stability of piane systems of rods, by K. Borkmann. Washington, 1937.    12 p. diagrs., tables.

(N.A.C.A. Technical memorandums no. 837) (From Luftfahrt-forschung, MUnchen und Berlin, Feb. 20, 1937, v. 14, no. 2, p. 19)

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