Wannakrairoj, S., and S. Kaewsuralikhit. “Effects of Light and Relative Humidity in In Vitro Conditioning of Asparagus Plantlet Before Transplanting”. Agriculture and Natural Resources, vol. 33, no. 4, Dec. 1999, pp. 522-9, https://li01.tci-thaijo.org/index.php/anres/article/view/240405.