TY - JOUR AU - R. Willson AU - C. Duncan AU - Jon Geist C2 - Science DA - 1980-01-11 00:01:00 LA - en M1 - 207 PB - Science PY - 1980 TI - Direct Measurement of Solar Luminosity Variation UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=905578 ER -