Enhancement of superconductivity in NbN nanowires by negative electron-beam lithography with positive resist. - Charaev, I.; Silbernagel, T.; Bachowsky, B.; Kuzmin, A.; Doerner, S.; Ilin, K.; Semenov, A.; Roditchev, D.; Vodolazov, D. Yu.; Siegel, M. (Journal of Applied Physics, 2017)