TY  - RPRT
TI  - Ian Gordon Simpson.
AU  - J D Russell
AU  - W A Dibden
PY  - 1977
DO  - 10.5694/j.1326-5377.1977.tb130743.x
UR  - https://pubmed.ncbi.nlm.nih.gov/323662/
ID  - 323662
ER  -