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2. M.T. Huber, Specific work of strain as a measure of material effort, Arch. Mech., 56, 173-190, 2004, English translation from the original edition in Polish, Wlaściwa praca odksztalcenia jako miara wyt¸e˙zenia materyalu. Przyczynek do podstaw teoryi wytrzymalości, Czasopismo Techniczne, XXII, 1904.
3. W. Burzy´nski, Selected passages from Wodzimierz Burzy´nskiś doctoral dissertation Study on material effort hypotheses, Engng. Trans., 57, 185-215(2009), English translation from the original edition in Polish: Studium nad Hipotezami Wyt¸e˙zenia, Akademia Nauk Technicznych, Lwów, 1928.
4. W. Burzy´nski, Theoretical foundations of the hypotheses of material effort. Wlodzimierz Burzy´nski (1900-1970), Engng. Trans., 56, 189-225(2008), English translation from the original edition in Polish, Teoretyczne podstawy hipotez wyt¸e˙zenia, Czasopismo Techniczne, Lwów, 47, 1-41, 1929.
5. R.L. Hayes, M. Ortiz, E.A. Carter, Universal-binding energy relation for crystals that accounts for surface relaxation, Physical Review, B69, 172104 2004.