Boris M. Andreev (2001). "Separating of Hydrogen Isotopes in H2O-H2S System". Separation Science and Technology. 36 (8–9): 1949–89. doi:10.1081/SS-100104764. S2CID95014060.
U.S. patent 4,620,909, Method for isotope replenishment in an exchange liquid used in a laser induced isotope enrichment process
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Boris M. Andreev (2001). "Separating of Hydrogen Isotopes in H2O-H2S System". Separation Science and Technology. 36 (8–9): 1949–89. doi:10.1081/SS-100104764. S2CID95014060.