@Article{	  KufleitnerWeil10sf,
  author	= "Manfred Kufleitner and Pascal Weil",
  journal	= "Semigroup Forum",
  pages		= "243--254",
  title		= "On the lattice of sub-pseudovarieties of \textbf{DA}",
  volume	= "81",
  year		= "2010",
  doi		= "10.1007/s00233-010-9258-6"
}