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[2] Morgała A., Kozak Z., Moszumański Z. and Szczepański J., 2003, 2008, „Samoloty w Lotnictwie Polskim” (ang.: „Airplanes in Polish Aviation”), http://www.samolotypolskie.pl/samoloty/3124/126/WBS-Gwiazda-Polski
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[5] Safonova M., Nirmal K., Sreejith A. G., Satpodar M., Suresh A. …, 2016, “Measurements of Gondola Motion on a Stratospheric Balloon Flight” IIA Technical Report Series No. 16, pp. 1-9.
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[7] Commission Implementing Regulation (EU) No 923/2012 of 26 September 2012 laying down the common rules of the air and operational provisions regarding services and procedures in air navigation and amending Implementing Regulation (EU) No 1035/2011 and Regulations (EC) No 1265/2007, (EC) No 1794/2006, (EC) No 730/2006, (EC) No 1033/2006 and (EU) No 255/2010.
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[9] Kacprzak M., Kotlarz J., Kubiak K., Rotchimmel K. and Tkaczyk M., 2018, „Methodology for estimating defoliation of Quercus Robur L. on the basis of reflectance analysis in the range of 0.64-0.73 µm” Industrial Institute of Agricultural Engineering, Agricultural, horticultural and forestry technology, 2018/2.
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[10] Czapski P., Kacprzak M., Kotlarz J., Mrowiec K., Kubiak K. and Tkaczyk M., “Preliminary analysis of the forest health state based on multispectral images acquired by Unmanned Aerial Vehicle” Magazine Folia Forestalia Polonica Edition 3, Volume 57, Pages 138-144.10.1515/ffp-2015-0014
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[11] Czapski P., Dorosz K., Kacprzak M., Korniluk T., Kotlarz J., Mazur A. ... and Rotchimmel K., 2016, „Acquisition and processing of aerial and satellite data by a research team of the Remote Sensing Department in Institute of Aviation” Surveying Review, 88(3), 4-9.
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[12] Article of the University of Technology in Gdańsk, 2015, „W niedzielę studenci przetestują balon stratosferyczny” (ang.: “Students will test the stratospheric balloon on Sunday”),
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[13] https://pg.edu.pl/aktualnosci/-/asset_publisher/hWGncmoQv7K0/content/w-niedziele-studenci-przetestuja-balon-stratosferyczny
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[15] Mazur A., Kacprzak M., Kubiak k., Kotlarz J. and Skocki K. 2018 „The influence of atmospheric light scattering on reflectance measurements during photogrammetric survey flights at low altitudes over forest areas” Forest Research Papers 79 (1) 2018.10.2478/frp-2018-0007
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[17] Popowski S., 2011, „Verification of the idea of altitude and rate of climb measurement in selected aircraft” Transactions of the Institute of Aviation No 221, pages 143-160.
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[18] Kotlarz J. and Kacprzak M. 2017, „Species diversity of forest stands estimation algorithm using RGB images of the tree crowns” Measurements Robotics Automation 2017/3, Volume 223, Pages 59-66.
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