Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Martinek, V. 1956b. Prispevek k osvefleni problemu sesterkeho pokoleni u kurovce Ips typographus L [An attempt to explain the problem of sister broods in I typographus]. Sbornik Ceskoslovenske Akademie Zemedelskych Ved, Lesnictivi Praha 29:615-644.