1. Bowles, M.; Jacobs, K.; Zettler, L.; Delaney, T. Crossing effects on seed viability and experimental germination of the federal threatened Platanthera leucophoea (orchidaceae). Rodora 104:14–30; 2002.
2. Casal, J. Fotomorfogénesis: la luz como factor regulador del crecimiento. In: Azcon, J.; Talon, M., eds. Fundamentos de fisiología vegetal. Madrid: McGraw-Hill; 2000:377–388.
3. Chan, C.; Chang, W. C. Micropropagation of Cymbidium ensifolium var. Misericors through callus-derived rhizomes. In Vitro Cell. Dev. Biol. Plant 36:517–520; 2000.
4. Chen, J.; Chang, W. Induction of repetitive embryogenesis from seed-derived protocorms of Phalaenopsis amabilis var. formosa shimadzu. In Vitro Cell. Dev. Biol. Plant 40:290–293; 2004.
5. Chen, L. A simple tissue culture method developed to accelerate growth of plant tissues. J. Prim. Ind. 6(2):116–123; 1978.