Laurent Lévi. The singular limit of a bilateral obstacle problem for a class of degenerate parabolic-hyperbolic operators. Adv. Appl. Math., 35(1):34-57, 2005. [doi]
@article{Levi05-1, title = {The singular limit of a bilateral obstacle problem for a class of degenerate parabolic-hyperbolic operators}, author = {Laurent Lévi}, year = {2005}, doi = {10.1016/j.aam.2004.10.001}, url = {https://doi.org/10.1016/j.aam.2004.10.001}, researchr = {https://researchr.org/publication/Levi05-1}, cites = {0}, citedby = {0}, journal = {Adv. Appl. Math.}, volume = {35}, number = {1}, pages = {34-57}, }