Kim, Jin-Kwang; Cho, Sang-Bong (2013). "Study on stress fields near V-notch tip with end-hole under in-plane and out-of-plane conditions". International Journal of Precision Engineering and Manufacturing. 14 (7): 1153–1161. doi:10.1007/s12541-013-0157-0. S2CID255610800.
Kim, Jin-Kwang; Cho, Sang-Bong (2013). "Study on stress fields near V-notch tip with end-hole under in-plane and out-of-plane conditions". International Journal of Precision Engineering and Manufacturing. 14 (7): 1153–1161. doi:10.1007/s12541-013-0157-0. S2CID255610800.