Paulo C. Véras Emília Villani Ana Maria Ambrosio Nuno Silva Marco Vieira Henrique Madeira Errors on Space Software Requirements: A Field Study and Application Scenarios. 61-70 2010 ISSRE http://dx.doi.org/10.1109/ISSRE.2010.30 conf/issre/2010 db/conf/issre/issre2010.html#VerasVASVM10