Nonlinear electron transport in normally pinched-off quantum wireK. S. Novoselov, Yu. V. Dubrovskii, V. A. Sablikov, D. Yu. Ivanov, E. E. Vdovin, Yu. N. Khanin, V. A. Tulin, D. Esteve and S. BeaumontEurophys. Lett., 52 6 (2000) 660-666DOI: https://doi.org/10.1209/epl/i2000-00489-5