Reactivity of oil shale ashes towards sulfur dioxide. 2, Low-temperature ashes formed by using CFBC technologyKuusik, Rein, keemik; Kaljuvee, Tiit; Trikkel, Andres; Arro, HendrikOil shale1999 / 1, p. 51-63: ill https://artiklid.elnet.ee/record=b1000612*est