@article{MM2_1993__79_1_155832,
     author = {Ulf Persson and C.A.M. Peters},
     title = {Homeomorphic non-diffeomorphic surfaces with samll invariants.},
     journal = {Manuscripta mathematica},
     pages = {173--182},
     publisher = {mathdoc},
     volume = {79},
     number = {1},
     year = {1993},
     zbl = {0805.57013},
     url = {http://geodesic.mathdoc.fr/item/MM2_1993__79_1_155832/}
}