Kohl H. Transmission electron microscopy : physics of image formation / H. Kohl, L. Reimer, 2008 r=on-line
Modern ionospheric science : A collection of articles publ.on the occasion of the anniverary:"50 yares of ionospheric research in Lindau" / Ed. H. Kohl, 1996. - 551 p. - Текст : непосредственный.