Bhowmick, P., Biswas, A. and Bhattacharya, B. B. (2008) “Thinning-free Polygonal Approximation of Thick Digital Curves Using Cellular Envelope”, ELCVIA Electronic Letters on Computer Vision and Image Analysis. Cerdayola del Vallès, Spain, 7(2), pp. 76–95. doi: 10.5565/rev/elcvia.179.