Author Affiliations +
I. V. Khyzhniy,1,2 O. N. Grigorashchenko,1 A. N. Ogurtsov,1 E. V. Savchenko,1 M. Frankowski,3,4 A. M. Smith-Gicklhorn,4 V. E. Bondybey4
1B. Verkin Institute for Low Temperature Physics and Engineering (Ukraine)
2Karazin Kharkov National Univ. (Ukraine)
3Institute of Fluid-Flow Machinery (Poland)
4Technical Univ. Munich (Germany)