Aschoff, T., Spiecker, H. 2004. Algorithms for the automatic detection of trees in laser scanner data. – Thies, M., Koch, B., Spiecker, H., Weinacker, H. (eds.). International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, 36(8/W2), 1–5. ISPRS.
Calders, K., G. Newnham, A. Burt, S. Murphy, P. Raumonen, M. Herold, D. Culvenor, et al. 2015. Nondestructive estimates of above-ground biomass using terrestrial laser scanning. – Methods in Ecology and Evolution, 6, 198–208.
Chang, A., Eo, Y., Kim, Y., Kim, Y. 2013. Identification of individual tree crowns from LiDAR data using a circle fitting algorithm with local maxima and minima filtering. – Remote Sensing Letters, 4(1), 30–38.
Garrity, S.R., Meyer, K., Maurer, K.D., Hardiman, B., Bohrer, G. 2012. Estimating plot-level tree structure in a deciduous forest by combining allometric equations, spatial wavelet analysis and airborne LiDAR. – Remote Sensing Letters, 3(5), 443–451.
Hildebrandt, R., Iost, A. 2012. From points to numbers: a database-driven approach to convert terrestrial LiDAR point clouds to tree volumes. – European Journal of Forest Research, 131, 1857–1867.
Kuusk, A., Lang, M., Kuusk, J. 2013. Database of optical and structural data for the validation of forest radiative transfer models. – Kokhanovsky, A. (ed.). Light Scattering Reviews, 7, 109–148. Springer.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.1007/978-3-642-21907-8_4" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.1007/978-3-642-21907-8_4</a></dgdoi:pub-id>
Magnussen, S., Næsset, E., Gobakken, T., Frazer, G 2012. A fine-scale model for area-based predictions of tree-size-related attributes derived from LiDAR canopy heights. – Scandinavian Journal of Forest Research, 27(3), 312–322.<dgdoi:pub-id xmlns:dgdoi="http://degruyter.com/resources/doi-from-crossref" pub-id-type="doi"><a href="https://doi.org/10.1080/02827581.2011.624116" target="_blank" rel="noopener noreferrer" class="text-signal-blue hover:underline">10.1080/02827581.2011.624116</a></dgdoi:pub-id>
Maltamo, M., Packalen, P., Yu, X., Eerikainen, K., Hyyppa, J., Pitkanen, J. 2005. Identifying and quantifying structural characteristics of heterogeneous boreal forests using laser scanner data. – Forest Ecology and Management, 216(1–3), 41–50.
Press, W.H., Teukolsky, S.A., Vetterling, W.T., Flannery, B.P. 1992. Numerical recipes in FORTRAN. The art of scientific computing. Cambridge, Cambridge University Press.
Real, P.L., Moore, J.A., Newberry, J.D. 1989. Principal components analysis of tree stem profiles. – Canadian Journal of Forest Research, 19, 1538–1542.
Schilling, A., Schmidt, A., Maas, H.-G. 2011. Automatic tree detection and diameter estimation in terrestrial laser scanner point clouds. – Wendel, A., Sternig, S., Godec, M. (eds.). 16<sup>th</sup> Computer Vision Winter Workshop, Mitterberg, Austria, 1–8.
Tansey, K., Selmes, N., Anstee, A., Tate, A., Denniss, A. 2009. Estimating tree and stand variables in a Corsican Pine woodland from terrestrial laser scanner data. – International Journal of Remote Sensing, 30(19), 5195–5209.
Tappo, E. 1982. Average characteristics of forest stands in Estonia by dominant species, site fertility and age. Tallinn, Eesti NSV Põllumajandusministeeriumi Informatsiooni ja Juurutamise Valitsus. (In Estonian).