S. M.  Blank, Taeger, A., Liston, A. D., Smith, D. R., Rasnitsyn, A. P., Shinohara, A., Heidemaa, N., and Viitasaari, M., ?Studies toward a World Catalog of Symphyta (Hymenoptera).?, Zootaxa, vol. 2254, pp. 1-96, 2009.

M.  Viitasaari, Heidemaa, N., Nuorteva, M., and Zinovjev, A., ?An annotated checklist of the sawflies (Hymenoptera, Symphyta) of Estoni?, Proceedings of the Estonian Academy of Sciences. Biology. Ecology, vol. 47, pp. 126-147, 1998.

N.  Heidemaa and Viitasaari, M., ?Taxonomy of the Empria hungarica species-group (Hymenoptera, Tenthredinidae) in Northern Europe?, Entomologica Fennica, vol. 10, pp.  95-101, 1999.

N.  Heidemaa and Viitasaari, M., ?Parna reseri, a new leaf miner for the fauna of northern Europe (Hymenoptera, Tenthredinidae)?, Proceedings of the Estonian Academy of Sciences. Biology. Ecology , vol. 46, pp. 191-192, 1997.

M.  Nuorteva, Heidemaa, N., and Viitasaari, M., ?Praia taczanowskii Wankowitz in André (Hym., Cimbicidae) is repeatedly found in northern Europe?, Sawfly News, vol. 1, p. 11, 1997.