@misc{ZhengRettinger2005, author = {Xizhong Zheng and Robert Rettinger}, title = {Weak computability and representation of real numbers}, booktitle = {Mathematical Logic Quarterly}, volume = {50}, number = {4/5}, issn = {0942-5616}, institution = {FG Theoretische Informatik}, type = {articlenr}, pages = {431 -- 442}, year = {2005}, }