@article{10558,
  author = {K. Holgeid and John Krogstie and Dag Sj{\o}berg},
  title = {A Study of Development and Maintenance in Norway: Assessing the Efficiency of Information Systems Support Using Functional Maintenance},
  year = {2000},
  journal = {Information and Software Technology},
  volume = {42},
  number = {10},
  pages = {687-700,},
}