Ashfa Umber Imran Sarwar Bajwa Muhammad Asif Naeem NL-Based Automated Software Requirements Elicitation and Specification. 30-39 2011 ACC (2) https://doi.org/10.1007/978-3-642-22714-1_4 conf/acc/2011-2 db/conf/acc/acc2011-2.html#UmberBN11