Wang, H., H. Yang, C.S. Shivalila, M.M. Dawlaty, A.W. Cheng, F. Zhang, and R. Jaenisch, One-Step Generation of Mice Carrying Mutations in Multiple Genes by CRISPR/Cas-Mediated Genome Engineering. Cell, 2013. 153(4): p. 910-8. First paper showing mutagenesis. including multiplexing, in mouse embryos by pronuclear injection. Remarkably high efficiencies reported.
Li, D., Z. Qiu, Y. Shao, Y. Chen, Y. Guan, M. Liu, Y. Li, N. Gao, L. Wang, X. Lu, and Y. Zhao, Heritable gene targeting in the mouse and rat using a CRISPR-Cas system. Nat Biotechnol, 2013. 31(8): p. 681-3.
Fujii, W., K. Kawasaki, K. Sugiura, and K. Naito, Efficient generation of large-scale genome-modified mice using gRNA and CAS9 endonuclease. Nucleic Acids Res, 2013. 41(20): p. e187. By "large-scale", they mean a deletion of several kilobases.
Shen, B., J. Zhang, H. Wu, J. Wang, K. Ma, Z. Li, X. Zhang, P. Zhang, and X. Huang, Generation of gene-modified mice via Cas9/RNA-mediated gene targeting. Cell Research, 2013. 23(5): p. 720-3.
Yang, H., H. Wang, C.S. Shivalila, A.W. Cheng, L. Shi, and R. Jaenisch, One-step generation of mice carrying reporter and conditional alleles by CRISPR/Cas-mediated genome engineering. Cell, 2013. 154(6): p. 1370-9. First paper showing highly efficient CRISPR HDR-mediated gene editing in mouse embryos, in contrast to simple mutagenesis via the NHEJ pathway.