Nirmala, R., Navamathavan, R., Park, S.-J. and Kim, H. (2014) “Recent Progress on the Fabrication of Ultrafine Polyamide-6 Based Nanofibers Via Electrospinning: A Topical Review”, Nano-Micro Letters, 6(2), pp. 89-107. doi: 10.1007/BF03353773.