Reference:
Wildner, M., Tillmanns, E., Andrut, M., Lorenz, J. (2003) Sailaufite, (Ca,Na,☐)2Mn3O2(AsO4)2(CO3)·3H2O, a new mineral from Hartkoppe hill, Ober-Sailauf (Spessart mountains, Germany), and its relationship to mitridatite-group minerals and pararobertsite. European Journal of Mineralogy: 15: 555-564.