@article{AIF_1994__44_2_601_0,
     author = {Sj\"ostrand, Johannes},
     title = {Ferromagnetic integrals, correlations and maximum principles},
     journal = {Annales de l'Institut Fourier},
     pages = {601--628},
     publisher = {Association des Annales de l{\textquoteright}institut Fourier},
     volume = {44},
     number = {2},
     year = {1994},
     doi = {10.5802/aif.1411},
     mrnumber = {95h:81015},
     zbl = {0831.35031},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/aif.1411/}
}