@article{10_4064_fm_93_2_131_144,
     author = {Wojciech Guzicki},
     title = {On weaker forms of choice in second order arithmetic},
     journal = {Fundamenta Mathematicae},
     pages = {131--144},
     publisher = {mathdoc},
     volume = {93},
     number = {2},
     year = {1976},
     doi = {10.4064/fm-93-2-131-144},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-93-2-131-144/}
}