@conference{Massacci,
author = "Fabio Massacci and Federica Paci and Deepa Nagaraj and Le Minh Sang Tran and Alessandra Tedeschi",
booktitle = "Proceedings of International Workshop on  Empirical Requirements Engineering 2012",
note = "Partner: UNITN; project: NESSoS, No Tier; citation: 1",
title = "{A}ssessing a {R}equirements {E}volution {A}pproach: {A} {F}amily of {E}mpirical {S}tudies in the {A}ir {T}raffic {M}anagement {D}omain.{I}n proceedings of {I}nternational {W}orkshop on  {E}mpirical {R}equirements {E}ngineering, {C}hicago, {I}llinois,{USA} ",
year = "2012",
}