H. Bruun and J. Itämies, “The larval mine of <i>Stigmella lappovimella</i> (Svensson, 1976) on <i>Salix lapponum</i> (L.) (Lepidoptera, Nepticulidae)”, Entomol. Fennica, vol. 8, no. 2, pp. 103–107, Jun. 1997.