@Article{BierLotaToin97,
author = {Michel Bierlaire and Tsippy Lotan and Philippe L. Toint },
title = { On the overspecification of multinomial and nested logit models due to alternative specific constants},
journal = {Transportation Science},
volume = {31},
number = {4},
pages = {363-371},
doi = {10.1287/trsc.31.4.363},
year = {1997}
}