@article{CHARALAMBIDIS_2019,
    doi = {10.1017/s1471068419000279},
    url = {https://doi.org/10.1017%2Fs1471068419000279},
    year = {2019},
    month = {sep},
    publisher = {Cambridge University Press ({CUP})},
    volume = {19},
    number = {5-6},
    pages = {925--940},
    author = {ANGELOS CHARALAMBIDIS and CHRISTOS NOMIKOS and PANOS RONDOGIANNIS},
    title = {The Expressive Power of Higher-Order Datalog},
    journal = {Theory and Practice of Logic Programming}
}

@article{CHARALAMBIDIS_2019, doi = {10.1017/s1471068419000279}, url = {https://doi.org/10.1017%2Fs1471068419000279}, year = {2019}, month = {sep}, publisher = {Cambridge University Press ({CUP})}, volume = {19}, number = {5-6}, pages = {925--940}, author = {ANGELOS CHARALAMBIDIS and CHRISTOS NOMIKOS and PANOS RONDOGIANNIS}, title = {The Expressive Power of Higher-Order Datalog}, journal = {Theory and Practice of Logic Programming} }