@article{MM2_1993__80_3_155856,
     author = {Miroslav Brzezina},
     title = {Tusk type conditions and thinness for the parabolic operator of order ...},
     journal = {Manuscripta mathematica},
     pages = {21--26},
     publisher = {mathdoc},
     volume = {80},
     number = {3},
     year = {1993},
     zbl = {0801.31001},
     url = {http://geodesic.mathdoc.fr/item/MM2_1993__80_3_155856/}
}