(Vol. 15). Springer Science & Business Media. ^ a b c Oden, J. T., & Reddy, J. N. (2012). An introduction to the mathematical theory of finite elements
Arimanda NS Reddy, Jagedeesh P Babu, Tipirisetti N Rao, Banrida T Langstieh, Kumarasamy Thangaraj, Alla G Reddy, Lalji Singh, and Battini M Reddy (2007),