\Bibitem{GelGra68} \by I.~M.~Gel'fand, M.~I.~Graev \paper Representations of quaternion groups over locally compact and functional fields \jour Funktsional. Anal. i Prilozhen. \yr 1968 \vol 2 \issue 1 \pages 20--35 \mathnet{http://mi.mathnet.ru/faa2751} \mathscinet{http://mathscinet.ams.org/mathscinet-getitem?mr=236314} \zmath{https://zbmath.org/?q=an:0233.20016} \transl \jour Funct. Anal. Appl. \yr 1968 \vol 2 \issue 1 \pages 19--33 \crossref{https://doi.org/10.1007/BF01075357}