RISC RISC Research Institute for Symbolic Computation  
  • @article{RISC3254,
    author = {E.Shemyakova and F.Winkler},
    title = {{Obstacles to the Factorization of Linear Partial Differential Operators into Several Factors}},
    language = {english},
    journal = {Programming and Computer Software},
    volume = {33},
    number = {2},
    pages = {67--73},
    isbn_issn = {ISSN 0361-7688},
    year = {2007},
    note = {Original version in Russian "Programmirovanie"},
    refereed = {yes},
    length = {7}
    }