Resistive switching characteristics of polymer non-volatile memory devices in a scalable via-hole structure / Tae-Wook Kim, Hyejung Choi, Seung-Hwan Oh, Minseok Jo, Gunuk Wang, Byungjin Cho, Dong-Yu Kim, Hyunsang Hwang, Takhee Lee / Nanotechnology 20 (2), 025201 (200901)