@misc{Timoshenko_Stephen_P._(1878-1972)._Strength,
 author={Timoshenko, Stephen P. (1878-1972).},
 howpublished={online},
 publisher={D. van Nostrand Comp.},
 language={eng},
 type={książka},
 type={dokument piśmienniczy},
 title={Strength of materials. P. 1, Elementary theory and problems},
}