Josephson effect and Andreev reflection in Ba1–xNaxFe2As2 (x = 0.25 and 0.35) point contacts - V. V. Fisun; O. P. Balkashin; O. E. Kvitnitskaya; I. A. Korovkin; N. V. Gamayunova; S. Aswartham; S. Wurmehl; Yu. G. Naidyuk (Low Temperature Physics, 2014)