Vasco Brattka, Xizhong Zheng, Klaus Weihrauch. Approaches to Effective Semi-Continuity of Real Functions. Math. Log. Q., 45:481-496, 1999.
@article{BrattkaZW99, title = {Approaches to Effective Semi-Continuity of Real Functions}, author = {Vasco Brattka and Xizhong Zheng and Klaus Weihrauch}, year = {1999}, tags = {systematic-approach}, researchr = {https://researchr.org/publication/BrattkaZW99}, cites = {0}, citedby = {0}, journal = {Math. Log. Q.}, volume = {45}, pages = {481-496}, }