Types of Shelter and Covering Materials Influencing Growth, Pigment, and Nutrient Concentrations of Baby Rubber Plants (Peperomia obtusifolia) - García-Caparros P.; González-Salmerón O.; Pérez-Saiz M.; Calatrava R.; Teresa Lao M.; María Chica R.; De La Cruz G. (Hortscience, 2018)