2 literature references for Leptolalax alpinus Fei, Ye and Li in Fei, Ye and Huang, 1990:

Author: Frost, Darrel R.
Year: 2009
Title:
Source: database. Amphibian Species of the World: an Online Reference v5.3
Author:
Year: 2004
Title:
Source: database, Amphibian Species of the World: an Online Reference