BOONKERD, T., R. POLLAWATN, S. CHANTANAORRAPINT, and M. J. LAI. “A Note on Asterella khasyana (Griff.) Pandé, K.P. Srivast. and Sultan Khan (Marchantiales, Aytoniaceae) in Thailand”. Tropical Natural History, vol. 7, no. 2, Oct. 2007, pp. 109-13, https://li01.tci-thaijo.org/index.php/tnh/article/view/102907.