Armoni, A., Sonnenschein, J., Trittmann, U., & Frishman, Y. (1998). The spectrum of multi-flavor QCD2 and the non-abelian Schwinger equation. Nuclear Physics B, "B537"(1-3), pp. 503-515. doi:10.1016/S0550-3213(98)00664-6

Armoni, Adi, J. Sonnenschein, U. Trittmann, and Y. Frishman. "The Spectrum of Multi-flavor QCD2 and the Non-abelian Schwinger Equation." Nuclear Physics B "B537", no. 1-3 (1998): 503-515.

Armoni, Adi, J. Sonnenschein, U. Trittmann, and Y. Frishman. "The Spectrum of Multi-flavor QCD2 and the Non-abelian Schwinger Equation." Nuclear Physics B "B537".1-3 (1998): 503-515.