Theta series for indefinite quadratic forms over real number fields Jeffrey Stopple (1995) Acta Arithmetica
Theta series mod p and the basis problem for Nebentypus. Paul Ponomarev (1991) Journal für die reine und angewandte Mathematik
Theta series of quaternary quadratic forms over Z and Z[(1 + √p)/2] J. Hsia, D. Hung (1985) Acta Arithmetica
Theta Series of Ternary and Quaternary Quadratic Forms. J.S. Hsia, D.C. Hung (1983) Inventiones mathematicae
Thetanullwerte and stable modular forms for Hecke groups. Riccardo Salvati Manni (1994) Mathematische Zeitschrift
Thetareihen mit harmonischen Koeffizienten zur Siegelschen Modulgruppe. Eberhard Freitag (1980) Mathematische Annalen
Thetareihen positiv definiter quadratischer Formen. R. Schulze-Pillot (1984) Inventiones mathematicae
Three classical results on representations of a number. Hirschhorn, Michael D. (1999) Séminaire Lotharingien de Combinatoire [electronic only]