@article{JTNB_2006__18_1_29_0,
     author = {Clark, Pete L.},
     title = {On elementary equivalence, isomorphism and isogeny},
     journal = {Journal de th\'eorie des nombres de Bordeaux},
     pages = {29--58},
     publisher = {Universit\'e Bordeaux 1},
     volume = {18},
     number = {1},
     year = {2006},
     doi = {10.5802/jtnb.532},
     zbl = {1106.12003},
     mrnumber = {2245874},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/jtnb.532/}
}