Hsien yü kuei hua yen chiu yü t‘an so, 1990 t.p. (Ho-pei sheng Huo-lu hsien)
BGN Gaz., 1990 p. 710 (Huo-lu hsien, 38 05 N, 114 18 E; variants: Huai-lu hsien, Huolu Xian)
Ching-hsing hsien chih, between 1986 and 1992 p. 46 (Huo-lu hsien; absorbed by Ching-hsing hsien, 11-5-1958; re-est., 6-1960; absorbed again by Ching-hsing hsien, 5-1961; re-est., 1962)