# Analysis of full disc Ca II K spectroheliograms

> Research article (Astronomy and Astrophysics, 2017) · cited 38× · AI/ML

**Wikidata**: [openalex:W4300411003](https://www.wikidata.org/wiki/openalex:W4300411003)  
**Source**: https://4ort.xyz/entity/analysis-of-full-disc-ca-ii-k-spectroheliograms