Lefevere, Jonas, et al. “Campaigning Online and Offline: Different Ballgames? : Presidentialization, Issue Attention and Negativity in Parties’ Facebook and Newspaper Ads in the 2019 Belgian General Elections”. Politics of the Low Countries, vol. 2, no. 3, Mar. 2025, pp. 380-94, https://doi.org/10.5553/PLC/258999292020002003007.