Bibliography
====


1.  Mr. ABBAS. "Discreet formulation of touch-friction". *Code_Aster* reference documentation. [:ref:`R5.03.50 <R5.03.50>`].


2.  Mr. ABBAS. "Contact elements derived from a continuous hybrid formulation". *Code_Aster* reference documentation. [:ref:`R5.03.52 <R5.03.52>`].


3.  T. OF SOZA. "Operator DEFI_CONTACT". *Code_Aster* usage documentation. [:external:ref:`U4.44.11 <U4.44.11>`].


4.  A. KONTER. "Advanced Finite Element Contact Benchmarks." NAFEMS, 2006.


5.  A. KONTER. "How to conduct a contact and friction analysis." NAFEMS, 2000.