@article{Soisalon_Soininen_1979,
    doi = {10.1007/bf00268320},
    url = {https://doi.org/10.1007%2Fbf00268320},
    year = {1979},
    month = {nov},
    publisher = {Springer Science and Business Media {LLC}},
    volume = {12},
    number = {4},
    pages = {339--369},
    author = {Eljas Soisalon-Soininen and Esko Ukkonen},
    title = {A method for transforming grammars into {LL}(k) form},
    journal = {Acta Informatica}
}

@article{Soisalon_Soininen_1979, doi = {10.1007/bf00268320}, url = {https://doi.org/10.1007%2Fbf00268320}, year = {1979}, month = {nov}, publisher = {Springer Science and Business Media {LLC}}, volume = {12}, number = {4}, pages = {339--369}, author = {Eljas Soisalon-Soininen and Esko Ukkonen}, title = {A method for transforming grammars into {LL}(k) form}, journal = {Acta Informatica} }