Myint, S. W., Gober, P., Brazel, A., Grossmann-Clarke, S., Weng, Q. (2011): Per-pixel vs. object-based classification of urban land cover extraction using high spatial resolution imagery. - Remote Sensing of Environment, 115, 5, 1145-1161.https://doi.org/10.1016/j.rse.2010.12.017