@article {MR4520557,
	title = {Every $\Delta_2^0$ degree is a strong degree of categoricity},
	journal = {J. Math. Log.},
	volume = {22},
	number = {3},
	year = {2022},
	pages = {Paper No. 2250022, 18},
	issn = {0219-0613,1793-6691},
	doi = {10.1142/S0219061322500222},
	url = {https://doi.org/10.1142/S0219061322500222},
	author = {Csima, Barbara F. and Ng, Keng Meng}
}