TY  - JOUR

T1  - Temporal and Periodic Analysis of Penumbra–Umbra Ratio for the Last Four Solar Cycles

JO  - Solar Physics

UR  - http://dx.doi.org/10.1007/s11207-024-02263-5

PY  - 2024/02/12

AU  - Chowdhury P

AU  - Kilcik A

AU  - Saha A

AU  - Rozelot J-P

AU  - Obridko V

AU  - Erdélyi R

ED  - 

DO  - DOI: 10.1007/s11207-024-02263-5

PB  - Springer Science and Business Media LLC

VL  - 299

IS  - 2

SP  - 19

Y2  - 2024/12/22

ER  -