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Thoma, Marco; Kranz-Baltensperger, Yvonne; Kropf, Christian; Graber, Werner Adrian; Nentwig, Wolfgang; Frick, Holger (2014). The new Southeast Asian goblin spider genus Aposphragisma (Araneae, Oonopidae): diversity and phylogeny. Zootaxa, 3798(1), pp. 1-86. Magnolia Press 10.11646/zootaxa.3798.1.1
Klopfstein, Seraina; Quicke, Donald L.J.; Kropf, Christian; Frick, Holger (2011). Molecular and morphological phylogeny of Diplazontinae (Hymenoptera, Ichneumonidae). Zoologica scripta, 40(4), pp. 379-402. Oxford: Blackwell Science 10.1111/j.1463-6409.2011.00481.x
Frick, Holger; Nentwig, Wolfgang; Kropf, Christian (2010). Progress in erigonine spider phylogeny - the Savignia-group is not monophyletic (Araneae: Linyphiidae). Organisms diversity & evolution, 10(4), pp. 297-310. Berlin: Springer-Verlag 10.1007/s13127-010-0023-1
Lasut, Liana; Marusik, Yuri M; Frick, Holger (2009). First description of the female of the spider Savignia zero Eskov, 1988 (Araneae: Linyphiidae). Zootaxa, 2267, pp. 65-68. Auckland (NZ): Magnolia Press
Muff, Patrick; Kropf, Christian; Frick, Holger; Nentwig, Wolfgang; Schmidt-Entling, Martin H. (2009). Coexistence of divergent communities at natural boundaries: spider (Arachnida: Araneae) diversity across an alpine timberline. Insect conservation and diversity, 2(1), pp. 36-44. Oxford: Blackwell 10.1111/j.1752-4598.2008.00037.x
Frick, Holger (2008). First record of Hypsocephalus dahli in Switzerland with a review of its distribution, ecology and taxonomy (Araneae, Linyphiidae). Arachnologische Mitteilungen(35), pp. 35-44. Basel: Arachnologische Arbeitsgemeinschaften Deutschlands, c/o Naturhistorisches Museum Basel
Frick, Holger; Kropf, Christian; Nentwig, Wolfgang (2007). Laboratory temperature preferences of the wolf spider Pardosa riparia (Araneae: Lycosidae). Bulletin of the British Arachnological Society, 14(1), pp. 45-48. Loughborough, UK: British Arachnological Society
Frick, Holger; Nentwig, Wolfgang; Kropf, Christian (2007). Influence of stand-alone trees on epigeic spiders (Araneae) at the alpine timberline. Annales zoologici Fennici, 44(1), pp. 43-57. Helsinki: Finnish Zoological and Botanical Pub. Board
Muff, Patrick; Schmidt, Martin; Frick, Holger; Nentwig, Wolfgang; Kropf, Christian (2007). Spider (Arachnida: Araneae) distribution across the timberline in the Swiss Central Alps (Alp Flix, Grisons) and three morphologically remarkable species. Arachnologische Mitteilungen(34), pp. 16-24. Basel: Arachnologische Arbeitsgemeinschaften Deutschlands, c/o Naturhistorisches Museum Basel
Frick, Holger; Haenggi, Ambros; Kropf, Christian; Nentwig, Wolfgang; Bolzern, Ange (2006). Faunistically remarkable spiders (Arachnida: Araneae) of the timberline in the Swiss Central Alps (Alp Flix, Grisons). Mitteilungen der Schweizerischen Entomologischen Gesellschaft, 79(3/4), pp. 167-187. Zürich: Schweizerische Entomologische Gesellschaft