@article{MSH_1985__90__19_0,
     author = {Ramana Murty, P. V. and Engelbert, Teresa},
     title = {On valuation in semilattices},
     journal = {Math\'ematiques et sciences humaines},
     pages = {19--44},
     publisher = {Ecole Pratique des hautes \'etudes, Centre de math\'ematique sociale et de statistique},
     volume = {90},
     year = {1985},
     mrnumber = {820164},
     zbl = {0579.06007},
     language = {en},
     url = {http://www.numdam.org/item/MSH_1985__90__19_0/}
}