Long Zhang, Kejian Xu. 5) is trivial. Math. Comput., 85(299):1523-1538, 2016. [doi]
@article{ZhangX16-2, title = {5) is trivial}, author = {Long Zhang and Kejian Xu}, year = {2016}, doi = {10.1090/mcom/3003}, url = {http://dx.doi.org/10.1090/mcom/3003}, researchr = {https://researchr.org/publication/ZhangX16-2}, cites = {0}, citedby = {0}, journal = {Math. Comput.}, volume = {85}, number = {299}, pages = {1523-1538}, }