@article{杨瑞霞_1, author = {[杨瑞霞, 詹志明]}, title = {太阳黑子周期长度—与气候密切相关的太阳活动指标}, publisher = {地理科学进展}, year = {1996}, journal = {地理科学进展}, volume = {15}, number = {2}, eid = {1}, pages = {1-4}, keywords = {}, doi = https://www.progressingeography.com/CN/10.11820/dlkxjz.1996.02.001 }