Perego, U. (2000). A variationally consistent generalized variable formulation for enhanced strain finite elements. Communications in Numerical Methods in Engineering, 16(3), 151. https://doi.org/10.1002/(SICI)1099-0887(200003)16:3<151::AID-CNM309>3.0.CO;2-5
Chicago Style (17th ed.) CitationPerego, Umberto. "A Variationally Consistent Generalized Variable Formulation for Enhanced Strain Finite Elements." Communications in Numerical Methods in Engineering 16, no. 3 (2000): 151. https://doi.org/10.1002/(SICI)1099-0887(200003)16:3<151::AID-CNM309>3.0.CO;2-5.
MLA (9th ed.) CitationPerego, Umberto. "A Variationally Consistent Generalized Variable Formulation for Enhanced Strain Finite Elements." Communications in Numerical Methods in Engineering, vol. 16, no. 3, 2000, p. 151, https://doi.org/10.1002/(SICI)1099-0887(200003)16:3<151::AID-CNM309>3.0.CO;2-5.