Harrington, Leo, and Kechris, Alexander. "$Π^1_2$ singletons and $O^#$." Fundamenta Mathematicae 95.3 (1977): 167-171. <http://eudml.org/doc/215019>.
@article{Harrington1977, author = {Harrington, Leo, Kechris, Alexander}, journal = {Fundamenta Mathematicae}, language = {eng}, number = {3}, pages = {167-171}, title = {$Π^1_2$ singletons and $O^#$}, url = {http://eudml.org/doc/215019}, volume = {95}, year = {1977}, }
TY - JOUR AU - Harrington, Leo AU - Kechris, Alexander TI - $Π^1_2$ singletons and $O^#$ JO - Fundamenta Mathematicae PY - 1977 VL - 95 IS - 3 SP - 167 EP - 171 LA - eng UR - http://eudml.org/doc/215019 ER -