@article{10_4064_sm198_1_2,
     author = {Thomas Kalmes and Markus Niess},
     title = {Universal zero solutions of linear partial differential operators},
     journal = {Studia Mathematica},
     pages = {33--51},
     year = {2010},
     volume = {198},
     number = {1},
     doi = {10.4064/sm198-1-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm198-1-2/}
}