International

Argentine
Verbic, Francisco: An Overview of Class Actions in Argentina [PDF]
Ucín, Carlota: Tutela judicial efectiva en litigios estructurales [PDF]

États-Unis d'Amérique
LaMunyon, Scott: Class Actions: Illinois, United States [PDF]
Bengel, Kacey; Esponda, Natasha Rose: Class Actions in the U.S. [PDF]
Lee-Sanchez, Gabriel: California Class Action Law [PDF]
Klonoff, Robert H.: COVID-19 Aggregate Litigation: The Search for the Upstream Wrongdoer [PDF]

Hongrie
Nagy, Csongor István: Le Débat Sur L’action Collective en Europe : Ils N’ont Rien Appris, Ni Rien Oublié ? [PDF]

Italie
Zuffi, Beatrice: The 2019 Italian Reform on Class Action and the Collective Injunctive Remedy [PDF]

Nouvelle-Zélande
Chamberlain, Nikki; Watson, Susan: The Emergence and Reform of the New Zealand Class Action: The Second Empirical Study [WEB]
Chamberlain, Nikki: Supreme Court Orders First Opt-Out Class Action in New Zealand: Southern Response Earthquake Services Limited v Ross [WEB]

Portugal
Ius Omnibus: Popular Actions (as of December 2021) [PDF]
Sousa Ferro, Miguel: Class Actions in Portugal: The little regime that could [PDF]