@Article{Gershenzon_etal1973, author="Gershenzon, E. M. and Gol{\textquoteright}tsman, G. and Ptitsina, N. G.", title="Energy spectrum of free excitons in germanium", journal="JETP Lett.", year="1973", volume="18", number="3", pages="93", optkeywords="Ge; free excitons; energy spectrum", optnote="exported from refbase (https://db.rplab.ru/refbase/show.php?record=1734), last updated on Sun, 30 May 2021 12:08:39 -0500", opturl="http://jetpletters.ru/ps/1808/article_27627.shtml" }