@misc{strenght+hypotheses+a+never+ending+story, author = {Altenbach, Holm}, title = {Strenght hypotheses – a never ending story}, journal = {Czasopismo Techniczne. Mechanika}, address = {Kraków}, publisher = {Wydawnictwo PK}, date = {2010}, number = {R. 107, Z. 20, 4-M} }