found: Wismut, 1993:p. 3 (with reunification of Germany the Federation has taken responsibility for Wismut) p. 6, etc. (Wismut GmbH)
found: Das Wismut-Erbe, 1991:p. 26 (by agreement of USSR and DDR Wismut changed in 1953 into an equal Soviet-East German Aktiengesellschaft, SDAG)
notfound: Paul, R. Das Wismut-Erbe, 1991: p.18 (The mining started in 1946. To disguise its real function, the Soviet undertaking was given the name Abteilung der Sowjetischen Staatlichen Aktiengesellschaft Wismut in Deutschland; called AG Wismut) p.26 (By agreement of USSR and DDR changed in 1953 into an equal Soviet-East German Aktiengesellschaft, SDAG) p. 27-28 (SDAG Wismut)