Andrei Draganescu, Todd F. Dupont, L. Ridgway Scott. Failure of the discrete maximum principle for an elliptic finite element problem. Math. Comput., 74(249):1-23, 2005. [doi]
@article{DraganescuDS05, title = {Failure of the discrete maximum principle for an elliptic finite element problem}, author = {Andrei Draganescu and Todd F. Dupont and L. Ridgway Scott}, year = {2005}, doi = {10.1090/S0025-5718-04-01651-5}, url = {http://dx.doi.org/10.1090/S0025-5718-04-01651-5}, researchr = {https://researchr.org/publication/DraganescuDS05}, cites = {0}, citedby = {0}, journal = {Math. Comput.}, volume = {74}, number = {249}, pages = {1-23}, }