https://uhnai.ifa.hawaii.edu/publication/investigating-ca-ii-emission-in-the-rs-canum-venaticorum-binary-er-vulpeculae-using-the-broadening-function-formalism/
Investigating Ca II Emission in the RS Canum Venaticorum Binary ER Vulpeculae Using the Broadening...
https://experts.colorado.edu/display/pubid_133641
ROTATIONAL MODULATION AND FLARES ON RS CANUM VENATICORUM AND BY DRACONIS STARS .16. IUE...
https://tr.wikipedia.org/wiki/Beta_Canum_Venaticorum
Beta Canum Venaticorum - Vikipedi
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