Kugler, B., Stahl, C., Treiber, S., Soltan, S., Haug, S., Schütz, G., et al. (2012). Microstructure and superconducting properties of MgB2 films prepared by solid state reaction of multilayer precursors of the elements. Thin Solid Films, 520, 6985-6988. doi:10.1016/J.tsf.2012.07.089.