@misc{CarstensenPeterseimSchedensack2011, author = {Carsten Carstensen and Daniel Peterseim and Mira Schedensack}, title = {Comparison Results of Three First-order Finite Element Methods for the Poisson Model Problem}, institution = {Humboldt-Universit{\"a}t zu Berlin}, type = {preprintmatheon}, year = {2011}, }