@article{MM2_1995__88_1_156111,
     author = {David J. Green and Ian J. Leary},
     title = {Chern {Classes} and {Extraspecial} {Groups.}},
     journal = {Manuscripta mathematica},
     pages = {73--84},
     publisher = {mathdoc},
     volume = {88},
     number = {1},
     year = {1995},
     zbl = {0862.20039},
     url = {http://geodesic.mathdoc.fr/item/MM2_1995__88_1_156111/}
}