Ivar Jacobson et al.: Agile and SEMAT: perfect partners. (2013) journals/cacm/JacobsonSN13 10.1145/2524713.2524723 Agile and SEMAT: perfect partners. 3 Ivar Jacobson 1 Ian Spence 2 Pan Wei Ng 3 53-59 Commun. ACM Commun. ACM 56 11 2013