Cenograms were introduced in the journal Terre et Vie.
Notes on verification
Confirmed by multiple independent peer-reviewed sources citing Valverde's 1964 publication in La Terre et la Vie as the origin of cenograms. [tier=silver indep_score=0.77 clusters=2 claim_tier=notable]
Sources
- Cenogram (wikipedia)
- https://www.sciencedirect.com/science/article/abs/pii/S0031018208006299 (corroboration)
- https://link.springer.com/article/10.1007/s41513-020-00131-2 (corroboration)
- https://link.springer.com/chapter/10.1007/978-3-319-94265-0_2 (corroboration)