@Misc{ ABCDGJK21, author = { Albritton, Dallas and Bruè, Elia and Colombo, Maria and De Lellis, Camillo and Giri, Vikram and Janisch, Maximilian and Kwon, Hyunju }, title = { Instability and nonuniqueness for the 2d Euler equations in vorticity form, after M. Vishik }, journal = { Annals of Mathematics Studies }, year = { 2021 }, pages = { }, URL = { http://cvgmt.sns.it/paper/5404/ }, note = { cvgmt preprint} }