@misc{misc, title = {{Proper Orthogonal and Dynamic Mode Decomposition of Sunspot Data}}, url = {{}}, year = {{2020}}, month = {{10}}, author = {{Albidah AB and Brevis W and Fedun V and Ballai I and Jess DB and Stangalini M and Higham J and Verth G}}, note = {{Accessed on 2024/12/22}}}