Citation: Ross, M.; Evans, H. T. (1964). Studies of the torbernite minerals (I): The crystal structure of abernathyite and the structurally related compounds NH4(UO2AsO4).3H2O and K(H3O)(UO2AsO4)2.6H2O Sample : Abernathyite - NH4. American Mineralogist, 49, pp. 1578-1602.