Helsingfors, 1896. — 224 p. — (Suomalais-Ugrilaisen Seuran Toimituksia V).
Thomsen made a number of important contributions to linguistics, including his work on the Germanic, Baltic, and Indo-Iranian influences on Finnic. In 1893, he deciphered the Turkic Orkhon inscriptions in advance of Russian linguist Wilhelm Radloff (1837–1918). Vilhelm Thomsen first published the translation in French in 1896. He then published another interpretation in Danish in 1922 with a more complete translation.