Reyns-Chikuma, Chris. “Franquin, Spirou, Lagaffe, Le Trombone Illustré [illustrated Magazine], Idées Noires [dark Thoughts], About Some Examples of Folly Madness in Franco-Belgian Comics”. Çédille, Journal of French Studies, Oct. 2017, pp. 229-48, https://www.ull.es/revistas/index.php/cedille/article/view/1243.