@article{10_4064_sm201_1_7,
     author = {Thomas Kalmes},
     title = {Surjectivity of partial differential operators 
on ultradistributions of {Beurling} type in two dimensions},
     journal = {Studia Mathematica},
     pages = {87--102},
     publisher = {mathdoc},
     volume = {201},
     number = {1},
     year = {2010},
     doi = {10.4064/sm201-1-7},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm201-1-7/}
}