@article{MM3_2000_4_1_a14,
     author = {Janez U\v{s}an and Mali\v{s}a \v{Z}i\v{z}ovi\'c},
     title = {A {Note} on the {Post's} {Coset} {Theorem}},
     journal = {Mathematica Moravica},
     pages = {109 - 114},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {2000},
     url = {https://geodesic-test.mathdoc.fr/item/MM3_2000_4_1_a14/}
}