@article{701781,
     title = {An alternate approach to the Pirogov -- Sinai theory, not employing the models with a parameter},
     booktitle = {Proceedings of the 11th Winter School on Abstract Analysis},
     series = {GDML\_Books},
     publisher = {Circolo Matematico di Palermo},
     address = {Palermo},
     year = {1984},
     pages = {[397]-401},
     mrnumber = {MR0744404},
     url = {http://dml.mathdoc.fr/item/701781}
}

Zahradník, Miloš. An alternate approach to the Pirogov – Sinai theory, not employing the models with a parameter, dans Proceedings of the 11th Winter School on Abstract Analysis, GDML_Books,  (1984), pp. [397]-401. http://gdmltest.u-ga.fr/item/701781/