TY  - RPRT
TI  - Experiences with the butterfly chart.
AU  - M V Kirtane
AU  - S N Merchant
AU  - S B Medikeri
PY  - 1986
DO  - 10.1017/s002221510009890x
UR  - https://pubmed.ncbi.nlm.nih.gov/3950477/
ID  - 3950477
ER  -