A
[AP06] Horacio Arló-Costa and Eric Pacuit. First-Order Classical Modal Logic. Studia Logica 84(2):171-210. Kluwer Academic, November 2006. 
@article{studlog84(2)-AP,
  author =              {Arl{\'o}{-}Costa, Horacio and Pacuit, Eric},
  title =               {First-Order Classical Modal Logic},
  publisher =           {Kluwer Academic},
  journal =             {Studia Logica},
  volume =              {84},
  number =              {2},
  pages =               {171-210},
  year =                {2006},
  month =               nov,
  doi =                 {10.1007/s11225-006-9010-0},
}
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