Declassified and Approved for release 2012/05/10: CIA-RDP88B01125R000300120005-6 Levedeva NN, Reactions of the central nervous system to peripheral effects of low-intensity EHF emissions. Approved for release 2000/08/10:
CIA-RDP96-00792R000100070001-9 Potekhina IL, Akoyev GN, Yenin LD, Oleyner 1992 Effects of low-intensity electromagnetic radiation in the millimeter range on the cardiovascular system of the white rat. Fiziol Zh 78:35-41
Numerous other citations showing penetrating effects of millimeter waves are cited in: Betskii OY &Lebedeva NN. Low-intensity millimeter waves in biology and medicine.
In: Clinical Application of Bioelectromagnetic Medicine, Marcel Decker, New York, pp. 30-61. A very recent paper came to the same conclusion that millimeter waves produce highly penetrating effects for the same reason, extensive empirical evidence: Kostoff et al (Toxicol Lett 2020:323;35-40).