@inbook{Yang2021,
author = {Yang, S.},
title= {There were 2.6–4 million deaths in the three years of difficulty in excess of normal years},
year = {2021},
doi = {10.1007/978-981-16-1661-7_7},
booktitle = {Telling the Truth: China’s Great Leap Forward, Household Registration and the Famine Death Tally},
address = {Singapore},
publisher = {Springer},
pages = {117--131},
}