^Brückner, Alexander[in 英語] (1926). "Skrzat". Słownik etymologiczny języka polskiego. Vol. 8 Pušlisko-Stalmach. Kraków: Nakładem Krakowskiej Spółki Wydawniczej. p. 267.
^ abKõiva & Boganeva (2020), p. 391: "Linguistically, one of the Estonian terms – pisuhänd – refers back to the image of the fire snake; however, at the same time, neither the snake nor the flying snake is mentioned in the Estonian descriptions, as attention has been drawn to the spark tail or fire tail". Kõiva & Boganeva (2022), p. 83も同様。
^英国の文豪ディケンズも、エストニアの「スクラット(skrat)」を題材とした記事を「Obliging Dragon 律儀な竜」と題するなどしているが、実際の姿は「巨大な火性の形態で、長い尾をもつ」("The Skrat a huge fiery shape with a long tail; but it has no objection to put on the appearance of a cat, a fowl, or even a man.")とする
^Mackensen, L. (2000) [1930] "Drache". In: Hanns Bächtold-Stäubli; Eduard Hoffmann-Krayer edd. Handwörterbuch des Deutschen Aberglaubens: Band 2 C.M.B.-Frautragen' p. 394.