Beiträge zur kryptogamischen Flora Unterösterreichs. In: Beiträge zur Landeskunde Österreichs, vol.4, 1834.
Synopsis Nostochinearum Austriae inferioris. PhD Thesis, Vienna, 1836.
Genera Phycearum Lusitanae. (=Actas da Academia das Ciências de Lisboa), Lisbon 1850.
Apontamentos Fito-geograficos sobre a Flora da Província de Angola na Africa Equinocial. In: Anais do Conselho do Ultramarino de oct. 1858, Lisbon 1858.
Sinopse explicativa das amostras de Madeiras e drogas medicinais (...) coligidos na provincia de Angola, e enviados a Exposição Internacional de Londres 1862. Lisbon, 1862.
Sertum Angolense. In: Transactions of the Linnean Societyvol. XXII, London 1869.
Notizen über die Bryologie von Portugal. In: Flora, 1872.
Strlič, Matija. "Dr. Friderik Velbič, 1806–1872". Proteus, the journal of the Natural Sciences Society of Slovenia. Year 61, No. 9/10 (pp. 396-404). ISSN 0033-1805.COBISS 11592237
Lloyd CG. (1907). "New notes on the Geasters". Mycological Notes 25: 315.
Wraber, Tone. "Prvi odkritelj Blagayevega volčina je bil (slovenski?) Korošec" [The first discoverer of Daphne blagayana was a (Slovene?) Carinthian]. Proteus, the journal of the Natural Sciences Society of Slovenia. Year 61, No. 9/10 (pp. 391). ISSN 0033-1805.COBISS 11588653
Hermann Th. Schneider, Streets and Squares in Klagenfurt, Klagenfurt, no year, p.253
Albuquerque, S.; Figueirôa, S. (2018). “Depicting the invisible: Welwitsch’s map of travellers in Africa”. Earth Sciences History37 (1): 109–129. doi:10.17704/1944-6178-37.1.109.