AlterBBN v2: A public code for calculating Big-Bang nucleosynthesis
  constraints in alternative cosmologies
  We present the version 2 of AlterBBN, an open public code for the calculation
of the abundance of the elements from Big-Bang nucleosynthesis. It does not
rely on any closed external library or program, aims at being user-friendly and
allowing easy modifications, and provides a fast and reliable calculation of
the Big-Bang nucleosynthesis constraints in the standard and alternative
cosmologies.
