@article{Rampersad_2006,
    title = {The state complexity of and},
    volume = {98},
    ISSN = {0020-0190},
    url = {http://dx.doi.org/10.1016/j.ipl.2005.06.011},
    DOI = {10.1016/j.ipl.2005.06.011},
    number = {6},
    journal = {Information Processing Letters},
    publisher = {Elsevier BV},
    author = {Rampersad, Narad},
    year = {2006},
    month = {jun},
    pages = {231–234}
}

@article{Rampersad_2006, title = {The state complexity of and}, volume = {98}, ISSN = {0020-0190}, url = {http://dx.doi.org/10.1016/j.ipl.2005.06.011}, DOI = {10.1016/j.ipl.2005.06.011}, number = {6}, journal = {Information Processing Letters}, publisher = {Elsevier BV}, author = {Rampersad, Narad}, year = {2006}, month = {jun}, pages = {231–234} }