| Erscheinungsdatum | Titel | Autor(en) |
| 2012 | `Missing link' species Capsella orientalis and Capsella thracica elucidate evolution of model plant genus Capsella (Brassicaceae) | Hurka, Herbert; Friesen, Nikolai ; German, Dmitry A.; Franzke, Andreas; Neuffer, Barbara |
| 2000 | Molecular and morphological evidence for an origin of the aberrant genus Milula within Himalayan species of Allium (Alliacae) | Friesen, N ; Fritsch, RM; Pollner, S; Blattner, FR |
| 2015 | Molecular and morphological revision of the Allium saxatile group (Amaryllidaceae): geographical isolation as the driving force of underestimated speciation | Seregin, Alexey P.; Anackov, Goran; Friesen, Nikolai |
| 2002 | Molecular cytogenetic analysis of Podocarpus and comparison with other gymnosperm species | Murray, BG; Friesen, N ; Heslop-Harrison, JS |
| 2004 | Molecular evidence for bicontinental hybridogenous genomic constitution in Lepidium sensu stricto (Brassicaceae) species from Australia and New Zealand | Mummenhoff, K ; Linder, P; Friesen, N ; Bowman, JL; Lee, JY; Franzke, A |
| 2020 | Molecular genetic studies of the natural self-renewal of Pinus sylvestris L. populations on the example of the East European Plain and the southern outskirts of the Ural mountain country | Rjabuchina, V, M.; Kalyakina, R. G.; Friesen, N. |
| 2004 | Molecular signals for Late Tertiary Early Quaternary range splits of an Eurasian steppe plant: Clausia aprica (Brassicaceae) | Franzke, A; Hurka, H; Janssen, D; Neuffer, B ; Friesen, N ; Markov, M; Mummenhoff, K |
| 2019 | Molecular-genetic analysis of Malus sieversii - comparison of Dzungarian populations in situ and ex situ | Shadmanova, L.; Sitpayeva, G.; Mukanova, G.; Friesen, N. |
| 2007 | Phylogenetic relationships of wild and cultivated species of Allium section Cepa inferred by nuclear rDNA ITS sequence analysis | Gurushidze, M.; Mashayekhi, S.; Blattner, F. R.; Friesen, N. ; Fritsch, R. M. |
| 2023 | Phylogeny and Flow Cytometry of the Genus <i>Kalidium</i> Moq. (Amaranthaceae s.l.) in Kazakhstan | Osmonali, B. B.; Vesselova, P. V.; Kudabayeva, G. M.; Skaptsov, M. V.; Shmakov, A. I.; Friesen, N. |
| 2016 | Phylogeny of Allium L. subgenus Anguinum (G. Don. ex WDJ Koch) N. Friesen (Amaryllidaceae) | Herden, Tobias; Hanelt, Peter; Friesen, Nikolai |
| 2019 | Phylogeographic analysis of Pinus sylvestris in forest-steppe and steppe zones of the Orenburg Region | Rjabuchina, M. V.; Kalyakina, R. G.; Friesen, N. |
| 2004 | Plant genetic resources in botanical gardens | Hurka, H.; Neuffer, B. ; Friesen, N. |
| 2006 | Relationship between Chinese chive (Allium tuberosum) and its putative progenitor A. ramosum as assessed by random amplified polymorphic DNA (RAPD) | Blattner, F.R.; Friesen, N. |
| 2020 | Seed Morphology of Allium L. (Amaryllidaceae) from Central Asian Countries and Its Taxonomic Implications | Baasanmunkh, Shukherdorj; Lee, Jae Kyoung; Jang, Ju Eun; Park, Min Su; Friesen, Nikolai ; Chung, Sungwook; Choi, Hyeok Jae |
| 2017 | Spontaneous hybridization among Allium tulipifolium and A. robustum (Allium subg. Melanocrommyum, Amaryllidaceae) under cultivation | Smirnov, Sergei; Skaptsov, Mikhail; Shmakov, Alexander; Fritsch, Reinhard M.; Friesen, Nikolai |
| 2016 | Synopsis of the genus Anopteris (Pteridophyta, Pteridaceae) | Vaganov, A. V.; Shmakov, A. I.; Friesen, N. |
| 2018 | Taxonomic review of Allium senescens subsp. glaucum (Amaryllidaceae) | Sinitsyna, T.; Friesen, N. |
| 2021 | Taxonomy and phylogenetics of Allium section Decipientia (Amaryllidaceae): morphological characters do not reflect the evolutionary history revealed by molecular markers | Friesen, Nikolai ; Smirnov, V, Sergei; Leweke, Mathias; Seregin, Alexey P.; Fritsch, Reinhard M. |
| 2019 | The Eurasian steppe belt: Status quo, origin and evolutionary history | Hurka, H.; Friesen, N. ; Bernhardt, K-G; Neuffer, B. ; Smirnov, V, S.; Shmakov, I, A.; Blattner, F. R. |
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