@article{10_4064_fm_87_3_261_281,
     author = {A. Ostaszewski},
     title = {On the descriptive sot theory of the lexicographic square},
     journal = {Fundamenta Mathematicae},
     pages = {261--281},
     publisher = {mathdoc},
     volume = {87},
     number = {3},
     year = {1975},
     doi = {10.4064/fm-87-3-261-281},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-87-3-261-281/}
}