@article{PDML_1985___1A_A2_0,
     author = {Lassner, Gisela A.},
     title = {Special {Perturbations} of {Gibbs} {States}},
     journal = {Publications du D\'epartement de math\'ematiques (Lyon)},
     pages = {1--11},
     publisher = {Universit\'e Claude Bernard - Lyon 1},
     number = {1A},
     year = {1985},
     zbl = {0611.47011},
     language = {en},
     url = {http://archive.numdam.org/item/PDML_1985___1A_A2_0/}
}