@phdthesis{17859,
  author = {Daniel Burgos},
  title = {Extension of the IMS Learning Design Specification based on Adaptation and Integration of Units of Learning},
  year = {2008},
  journal = {Escuela politécnica superior, Departamento de informática},
  volume = {Doctor en ingeniería informáti},
  publisher = { Universidad Carlos III de Madrid},
  address = {Leganés, Madrid, Spain},
}