@inproceedings{TUW-180950, author = {Kaindl, Hermann and Wagner, Patrick}, title = {{A} {U}nification of the {E}ssence of {G}oal-oriented {R}equirements {E}ngineering}, booktitle = {{P}roceedings of the {F}ourth {I}nternational {C}onference on {S}oftware {E}ngineering {A}dvances ({I}{C}{S}{E}{A} 2009}, year = {2009}, numpages = {6}, note = {talk: 4th {I}nternational {C}onference on {S}oftware {E}ngineering {A}dvances ({I}{C}{S}{E}{A}), {P}orto, {P}ortugal; 2009-09-20 -- 2009-09-25} }