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Petkova M, Popova N, Kolarova R.Petkova M, et al. Among authors: popova n.Eksp Med Morfol. 1977;16(4):194-7.Eksp Med Morfol. 1977.PMID: 590176Bulgarian.
Petkova I, Kolarova R, Popova N.Petkova I, et al. Among authors: popova n.Eksp Med Morfol. 1976;15(3):156-60.Eksp Med Morfol. 1976.PMID: 1021409Bulgarian.
Popova N, Petkova I, Kolarova R, Zhelcheski B, Nikolov A.Popova N, et al.Eksp Med Morfol. 1985;24(3):25-9.Eksp Med Morfol. 1985.PMID: 2933242Bulgarian.No abstract available.
Popova N, Kolarova R, Zakharieva B, Milanov S, Afar Ia.Popova N, et al.Eksp Med Morfol. 1985;24(4):1-6.Eksp Med Morfol. 1985.PMID: 2938928Bulgarian.No abstract available.
Petkova M, Popova N, Grigorova R, Kolarova R.Petkova M, et al. Among authors: popova n.Eksp Med Morfol. 1984;23(2):66-9.Eksp Med Morfol. 1984.PMID: 6236071Bulgarian.No abstract available.
Popova N, Kolarova R, Nikolov A, Taskova L.Popova N, et al.Eksp Med Morfol. 1984;23(2):69-75.Eksp Med Morfol. 1984.PMID: 6236072Bulgarian.No abstract available.