- V. K. Sazonov, “Convergent perturbation theory for lattice models with fermions”, Int. J. Mod. Phys. A, 31, no. 13, 2016,
1650072 
- S. Groote, J.G. Körner, A.A. Pivovarov, “On the evaluation of a certain class of Feynman diagrams in x-space: Sunrise-type topologies at any loop order”, Annals of Physics, 322, no. 10, 2007,
2374