Constien R, Forde A, Liliensiek B, Gröne HJ, Nawroth P, Hämmerling G, Arnold B. Characterization of a novel EGFP reporter mouse to monitor Cre recombination as demonstrated by a Tie2 Cre mouse line. Genesis. 2001 May;30(1):36–44. doi: 10.1002/gene.1030. PMID: 11353516.