1. Chemical composition and nutritional value of tomatoes;Hernández Suárez,2013
2. Instituto Canario de Estadísticahttp://www.gobiernodecanarias.org/istac
3. The Statistical Analysis of Compositional Data;Aitchison,1986
4. Modeling and Analysis of Compositional Data;Pawlowsky-Glahn,2015
5. Biplots of compositional data