TY  - RPRT
TI  - Letter: Three-dimensional shapes.
AU  - J R Morris
AU  - J D Harris
PY  - 1976
DO  - 10.1016/s0140-6736(76)91587-7
UR  - https://pubmed.ncbi.nlm.nih.gov/58240/
ID  - 58240
ER  -