Rokicki, J., D. Miniotas, M. Meilūnas, and A. Ušinskas. “An Algorithm for Step-Wise Skeletonization of Blood Vessel Network”. Elektronika Ir Elektrotechnika, vol. 80, no. 8, Oct. 2007, pp. 87-90, https://eejournal.ktu.lt/index.php/elt/article/view/11020.