Marion Scheepers. The length of some diagonalization games. Arch. Math. Log., 38(2):103-122, 1999. [doi]
@article{Scheepers99-0, title = {The length of some diagonalization games}, author = {Marion Scheepers}, year = {1999}, doi = {10.1007/s001530050117}, url = {http://dx.doi.org/10.1007/s001530050117}, researchr = {https://researchr.org/publication/Scheepers99-0}, cites = {0}, citedby = {0}, journal = {Arch. Math. Log.}, volume = {38}, number = {2}, pages = {103-122}, }