@article{MS2_1984__54_166886,
     author = {R.B. Israel and R.R. Phelps},
     title = {Some convexity questions arising in statistical mechanics.},
     journal = {Mathematica Scandinavica},
     pages = {133--156},
     publisher = {mathdoc},
     volume = {54},
     year = {1984},
     zbl = {0605.46013},
     url = {http://geodesic.mathdoc.fr/item/MS2_1984__54_166886/}
}