@incollection{Sutcliffe_1994,
    doi = {10.1007/3-540-58156-1_18},
    url = {https://doi.org/10.1007%2F3-540-58156-1_18},
    year = {1994},
    publisher = {Springer Berlin Heidelberg},
    pages = {252--266},
    author = {Geoff Sutcliffe and Christian Suttner and Theodor Yemenis},
    title = {The {TPTP} problem library},
    booktitle = {Automated Deduction - {CADE}-12}
}

@incollection{Sutcliffe_1994, doi = {10.1007/3-540-58156-1_18}, url = {https://doi.org/10.1007%2F3-540-58156-1_18}, year = {1994}, publisher = {Springer Berlin Heidelberg}, pages = {252--266}, author = {Geoff Sutcliffe and Christian Suttner and Theodor Yemenis}, title = {The {TPTP} problem library}, booktitle = {Automated Deduction - {CADE}-12} }