@article{AFM_1967_391-410_a2,
     author = {Pentti Laasonen},
     title = {On the discretizations error of the {Dirichlet} problem in a plane region with corners},
     journal = {Annales Fennici Mathematici},
     publisher = {mathdoc},
     volume = {391-410},
     year = {1967},
     doi = {10.5186/aasfm.1967.408},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1967.408/}
}