Kevin Smith. On the completeness of sets of complex exponentials. LMS J. Comput. Math., 14:137-139, 2011. [doi]
@article{Smith11-38, title = {On the completeness of sets of complex exponentials}, author = {Kevin Smith}, year = {2011}, doi = {10.1112/s1461157010000070}, url = {https://doi.org/10.1112/s1461157010000070}, researchr = {https://researchr.org/publication/Smith11-38}, cites = {0}, citedby = {0}, journal = {LMS J. Comput. Math.}, volume = {14}, pages = {137-139}, }