Book

Albert Einstein: "Those Happy Bernese Years" Hentschel, Ann M., Gerd Grasshoff, and Karl Wolfgang Graff. Albert Einstein: those Happy Bernese Years". Bern: Stämpfli, 2005.    

@BOOK{hentschel2005, title = {Albert Einstein: Those Happy Bernese Years}, publisher = {St{\"a}mpfli}, author = {Hentschel, Ann M. and Gra{\ss}hoff, Gerd and Graff, Karl Wolfgang}, location = {Bern}, date = {2005}, }