Improving dark energy constraints with high-redshift Type Ia supernovae from CANDELS and CLASHVincenzo Salzano, Steven A. Rodney, Irene Sendra, Ruth Lazkoz, Adam G. Riess, Marc Postman, Tom Broadhurst and Dan CoeA&A, 557 (2013) A64DOI: https://doi.org/10.1051/0004-6361/201321738