A spanning set for the space of super cusp forms. Knevel, Roland (2009) JIPAM. Journal of Inequalities in Pure & Applied Mathematics [electronic only]
Arithmetic vector bundles and automorphic forms on Shimura vartieties. I. M. Harris (1985) Inventiones mathematicae
Arithmetic vector bundles and automorphic forms on Shimura varieties, II Michael Harris (1986) Compositio Mathematica
Automorphismen des Siegelschen Quotienten zweiten Grades* Siegfried Suckow (1973) Mathematische Annalen