Daniel Ueltschi's course: further reading

Balint Toth, Reflection positivity, infrared bounds, continuous symmetry breaking, Prague notes 1996 part 1  part 2  part 3

Marek Biskup, Reflection positivity and phase transitions in lattice spin models, Prague notes 2006 (published in Lecture Notes in Mathematics by Springer-Verlag) pdf published version

Juerg Froehlich, Phase transitions and continuous symmetry breaking, Vienna notes 2011 part 1  part 2 

Christina Goldschmidt, Daniel Ueltschi, Peter Windridge, Quantum Heisenberg models and their probabilistic representations pdf