G. Castaño-Meneses, J. G. García-Franco, and J. G. Palacios-Vargas, “Spatial Distribution Patterns of Tillandsia violacea (Bromeliaceae) and Support Trees in an Altitudinal Gradient from a Temperate Forest in Central Mexico”, selbyana, vol. 24, no. 1, pp. 71–77, Feb. 2003.