Gábor Hegedüs. Difference sets and power residues. Australasian J. Combinatorics, 77:180-183, 2020. [doi]
@article{Hegedus20-1, title = {Difference sets and power residues}, author = {Gábor Hegedüs}, year = {2020}, url = {http://ajc.maths.uq.edu.au/pdf/77/ajc_v77_p180.pdf}, researchr = {https://researchr.org/publication/Hegedus20-1}, cites = {0}, citedby = {0}, journal = {Australasian J. Combinatorics}, volume = {77}, pages = {180-183}, }