Demattê M, Haag H, Vasques L. Mineral nutrition of ornamental plants XI: deficiencies of macronutrients and boron in Catharanthus roseus (L.) G. Don and Catharanthus roseus f. albus (Sweet) G. Don . An. Esc. Super. Agr. Luiz de Queiroz. 1987;44(1):419-433. doi:10.1590/S0071-12761987000100023