1Balick MJ, De Gezelle JM, Arvigo R. Feeling the pulse in Maya medicine: an endangered traditional tool for diagnosis, therapy, and tracking patients" progress [ J ]. Explore,2008,4 (2) : 113 - 9.
2Ann. E. Fink. Shadow and substance: a mopan maya view of humeri existance [J]. The Canadian Journal of Native Studies Ⅷ, 2 ( 1987 ) :399 -414.