@article{10_4064_fm221_3_1,
     author = {Miodrag Soki\'c},
     title = {Relational quotients},
     journal = {Fundamenta Mathematicae},
     pages = {189--220},
     publisher = {mathdoc},
     volume = {221},
     number = {3},
     year = {2013},
     doi = {10.4064/fm221-3-1},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm221-3-1/}
}