Schneider, Franciane, et al. “ Usage of Calendula Officinalis in the Prevention and Treatment of Radiodermatitis: A Randomized Double-Blind Controlled Clinical Trial ”. Revista Da Escola De Enfermagem Da USP, vol. 49, no. 2, Apr. 2015, pp. 221-8, https://doi.org/10.1590/S0080-623420150000200006.