}, S., A., K., {., E., A., Ziegler, H.(1965).Mecanics Vol 1 : Statics of Rigid Bodies, Fluids and Depormable Solids .London:Addison Wesley Publishing Company, Inc.
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}, S., A., K., {., E., A., Ziegler, H..Mecanics Vol 1 : Statics of Rigid Bodies, Fluids and Depormable Solids.London:Addison Wesley Publishing Company, Inc,1965.Text.