Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Siida, I. 1996. Haavaiiraskitest (Trypophloeus Fairmaire) eestis ja lähiriikides [Trypophloeus Fairmaine in Estonia and neighbouring countries]. Metsanduslikud Uurimused 27:149-154.