@Misc{ DeNKön21, author = { De Nitti, Nicola and König, Tobias }, title = { Critical functions and blow-up asymptotics for the fractional Brezis--Nirenberg problem in low dimension }, journal = { }, year = { 2021 }, pages = { }, URL = { http://cvgmt.sns.it/paper/5349/ }, note = { cvgmt preprint} }