Kay, Alex J. (October 2006). "Germany's Staatssekretäre, Mass Starvation and the Meeting of 2 May 1941". Journal of Contemporary History. 41 (4): 691. doi:10.1177/0022009406067750. S2CID145055706.
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Kay, Alex J. (October 2006). "Germany's Staatssekretäre, Mass Starvation and the Meeting of 2 May 1941". Journal of Contemporary History. 41 (4): 691. doi:10.1177/0022009406067750. S2CID145055706.