@article{10_4064_fm200_2_2,
     author = {Roman Kossak and Henryk Kotlarski},
     title = {More on extending automorphisms of
 models of {Peano} {Arithmetic}},
     journal = {Fundamenta Mathematicae},
     pages = {133--143},
     publisher = {mathdoc},
     volume = {200},
     number = {2},
     year = {2008},
     doi = {10.4064/fm200-2-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm200-2-2/}
}