<span class="mw-page-title-namespace">Template</span><span class="mw-page-title-separator">:</span><span class="mw-page-title-main">Pekar57a</span>
Elena & Fabrice's Web

Theory of electromagnetic waves in a crystal in which excitons arise. S. I. Pekar in J. Exp. Th. Phys. [ 33:1022] (1957).