@article{JMP06JUCS,
       author = "P. Juli\'an and G. Moreno and J. Penabad",
       title = "{O}perational/{I}nterpretive {U}nfolding of {M}ulti-adjoint {L}ogic {P}rograms",
       pages = "1679--1699",
       volume = "12",
       issue = {11},
       journal = "Journal of Universal Computer Science",
       year = "2006"
}