Mariusz Paradowski Halina Kwasnicka Krzysztof Borysewicz Avascular area detection in nailfold capillary images. 419-424 2009 IMCSIT http://dx.doi.org/10.1109/IMCSIT.2009.5352691 conf/imcsit/2009 db/conf/imcsit/imcsit2009.html#ParadowskiKB09