author = {Chitchyan, Ruzanna and Greenwood, Phil and Sampaio, Americo and Rashid, Awais and Garcia, Alessandro and Fernandes da Silva, Lyrene},
 title = {Semantic vs. syntactic compositions in aspect-oriented requirements engineering: an empirical study},
 booktitle = {AOSD '09: Proceedings of the 8th ACM international conference on Aspect-oriented software development},
 year = {2009},
 isbn = {978-1-60558-442-3},
 pages = {149--160},
 location = {Charlottesville, Virginia, USA},
 doi = {http://doi.acm.org/10.1145/1509239.1509260},
 publisher = {ACM},
 address = {New York, NY, USA},