@article{10_4064_fm177_2_5,
     author = {Alessandro Andretta and Donald A. Martin},
     title = {Borel{\textendash}Wadge degrees},
     journal = {Fundamenta Mathematicae},
     pages = {175--192},
     publisher = {mathdoc},
     volume = {177},
     number = {2},
     year = {2003},
     doi = {10.4064/fm177-2-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm177-2-5/}
}