RISC RISC Research Institute for Symbolic Computation  
  • @techreport{RISC2054,
    author = {S. Gerhold},
    title = {{On the Signs of Recurrence Sequences}},
    language = {english},
    year = {2004},
    institution = {SFB F013 Numerical und Symbolic Scientific Computing},
    length = {19}
    }