{"id":"001592072","type":"article","title":"Increase in Radiocarbon Concentration in Tree Rings from Kujawy Village (SE Poland) Around AD 993-994","publisher":"Cambridge University Press","publisher-place":"New York","pages":"1249-1258","container-title":"Proceedings of the 2nd International Radiocarbon in the Environment Conference (Part 1 of 2), 60,4 (2018","author":[{"family":"Rakowski","given":"Andrzej Z."}],"issued":{"raw":"2018"}}