@article{FRIESE_2011,
    doi = {10.1142/s012905411100891x},
    url = {https://doi.org/10.1142%2Fs012905411100891x},
    year = {2011},
    month = {nov},
    publisher = {World Scientific Pub Co Pte Lt},
    volume = {22},
    number = {07},
    pages = {1607--1623},
    author = {SYLVIA FRIESE and HELMUT SEIDL and SEBASTIAN MANETH},
    title = {{EARLIEST} {NORMAL} {FORM} {AND} {MINIMIZATION} {FOR} {BOTTOM}-{UP} {TREE} {TRANSDUCERS}},
    journal = {International Journal of Foundations of Computer Science}
}

@article{FRIESE_2011, doi = {10.1142/s012905411100891x}, url = {https://doi.org/10.1142%2Fs012905411100891x}, year = {2011}, month = {nov}, publisher = {World Scientific Pub Co Pte Lt}, volume = {22}, number = {07}, pages = {1607--1623}, author = {SYLVIA FRIESE and HELMUT SEIDL and SEBASTIAN MANETH}, title = {{EARLIEST} {NORMAL} {FORM} {AND} {MINIMIZATION} {FOR} {BOTTOM}-{UP} {TREE} {TRANSDUCERS}}, journal = {International Journal of Foundations of Computer Science} }