[1]
Zhelinski, V. and Zlatanov, B. 2022. On the UC and UC$^*$ properties and the existence of best proximity points in metric spaces.
Ann. Sofia Univ. Fac. Math. and Inf
. 109, (Dec. 2022), 121–146. DOI:https://doi.org/10.60063/gsu.fmi.109.121-146.