@article{PIM_1998_N_S_64_78_a13,
     author = {Miroslav \'Ciri\'c and Stojan Bogdanovi\'c and T. Petkovi\'c},
     title = {The {Lattice} of {Subautomata} of an {Automaton:} a {Survey}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {165 },
     publisher = {mathdoc},
     volume = {_N_S_64},
     number = {78},
     year = {1998},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_1998_N_S_64_78_a13/}
}