"Pipolan tammimetsikkö". aikamatkakarjalohjalla.fi (in Finnish). Karjalohjan Kotiseutuyhdistys. 2019. Archived from the original on 2022-06-03. Retrieved 2022-06-03.
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Nykänen, Topi (6 August 2006). "Elämänvoiman juurella". Turun Sanomat (in Finnish). Archived from the original on 2022-06-03. Retrieved 2022-06-03.
"Pipolan tammimetsikkö". aikamatkakarjalohjalla.fi (in Finnish). Karjalohjan Kotiseutuyhdistys. 2019. Archived from the original on 2022-06-03. Retrieved 2022-06-03.
"Tammi". Luontoportti (in Finnish). Archived from the original on 2022-06-03. Retrieved 2022-06-03.
Analysis of oak tannins by liquid chromatography-electrospray ionisation mass spectrometry. Pirjo Mämmelä, Heikki Savolainenb, Lasse Lindroosa, Juhani Kangasd and Terttu Vartiainen, Journal of Chromatography A, Volume 891, Issue 1, 1 September 2000, Pages 75–83, doi:10.1016/S0021-9673(00)00624-5
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Kennedy, C. E. J.; Southwood, T. R. E. (1984). "The number of species associated with British Trees: a re-analysis". Journal of Animal Ecology. 53 (2). Wiley, British Ecological Society: 459. doi:10.2307/4528. JSTOR4528.
Identification of triterpene saponins in Quercus robur L. and Q. petraea Liebl. Heartwood by LC-ESI/MS and NMR. Arramon G, Saucier C, Colombani D and Glories Y, Phytochem Anal., November-December 2002, volume 13, issue 6, pages 305–310, PMID12494747