@article{10_4064_fm217_2_2,
     author = {\r{A}sa Hirvonen and Tapani Hyttinen},
     title = {Metric abstract elementary classes with perturbations},
     journal = {Fundamenta Mathematicae},
     pages = {123--170},
     publisher = {mathdoc},
     volume = {217},
     number = {2},
     year = {2012},
     doi = {10.4064/fm217-2-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm217-2-2/}
}