Jensen, Ronald, and Johnsbråten, Håvard. "A new construction of non-constructible ${Δ^1}_3$ subset of ω." Fundamenta Mathematicae 81.4 (1974): 279-290. <http://eudml.org/doc/214645>.
@article{Jensen1974, author = {Jensen, Ronald, Johnsbråten, Håvard}, journal = {Fundamenta Mathematicae}, language = {eng}, number = {4}, pages = {279-290}, title = {A new construction of non-constructible $\{Δ^1\}_3$ subset of ω}, url = {http://eudml.org/doc/214645}, volume = {81}, year = {1974}, }
TY - JOUR AU - Jensen, Ronald AU - Johnsbråten, Håvard TI - A new construction of non-constructible ${Δ^1}_3$ subset of ω JO - Fundamenta Mathematicae PY - 1974 VL - 81 IS - 4 SP - 279 EP - 290 LA - eng UR - http://eudml.org/doc/214645 ER -