Iceland spar

Mineralogii͡a︡ i genezis islandskogo shpata Sibirskoĭ platformy

N.I. Andrusenko.

Erasmi Bartholini Experimenta crystalli Islandici disdiaclastici: quibus mira & insolita refractio detegitur

Erasmus Bartholin

Two essays on the nature and wonderful properties of Island crystal: the whole illustrated with copper plate figures

by Benjamin Martin

Viking navigation

Søren Thirslund.

Geologii︠a︡ i ot︠s︡enka mestorozhdeniĭ islandskogo shpata

Evgeniĭ I︠A︡kovlevich Kievlenko

Secrets of the Viking Navigators

Leif K. Karlsen

T︠S︡vetnye kamni i pʹezoopticheskoe syrʹe Tuvy

V.I. Kudri︠a︡vt︠s︡ev, A.I. Kudri︠a︡vt︠s︡eva ; redaktor V.I. Lebedev

Islandskiǐ shpat

Alekseǐ Vasil'evich Skropyshev

Experiments with the double refracting Iceland crystal which led to the discovery of a marvelous and strange refraction

by Erasmus Bartholinus ; rendered into English by Werner Brandt.

Versuche mit dem doppeltbrechenden isländischen Kristall