[ANALSENS, v.4 software. Caret Systemy Cyfrowe i Oprogramowanie SP z o.o., Gdańsk, Polska.]Search in Google Scholar
[Bujanowska A. 2003. Wstępne badania nad chemioprofilaktycznymi właściwościami buraka czerwonego. Praca dyplomowa. Katedra Technologii Leków i Biochemii, Politechnika Gdańska. [in Polish]]Search in Google Scholar
[Elbe J. H., Maing I. Y., Amundson C. H. 1974. Color stability of betanin. J. Food Sci. 39: 333-337.10.1111/j.1365-2621.1974.tb02888.x]Search in Google Scholar
[Elkner K., Badełek W., Adamicki F. 1997. [The effect of cultivar and storage conditions on quality of red beet.] Biuletyn Warzywniczy XLVI: 67-78. [in Polish with English summary]]Search in Google Scholar
[Felczyński K., Elkner K. 2008. Effect of long - term organic and mineral fertilization on yield and quality of red beet (Beta vulgaris L.). Veget. Crops Res. Bull. 68: 111-125. [DOI: 10.2478/v10032-008-0010-7]10.2478/v10032-008-0010-7]Search in Google Scholar
[Flohrova A. 1991. Nitrogen fertilization of vegetables from the ecological and nutritional aspects. Vedeckotechnicky Rozv. V. Zemedelsti, 6: 83-95.]Search in Google Scholar
[Grzebelus D. 1996. Interakcja genotypowo-środowiskowa dla zawartości azotanów w 11 genotypach buraka ćwikłowego. Ogólnopolski Zjazd Hodowców Roślin Ogrodniczych. Kraków: 229-232. [in Polish]]Search in Google Scholar
[Hallmann E., Rembiałkowska E. 2007. [Selected nutrient in red onions from organic and conventional production]. Żywność, Nauka, Technologia, Jakość 2 (51): 105-111 [in Polish with English summary]]Search in Google Scholar
[Michalik B., Grzebelus D. 1995. Betanine and nitrate contents in table beet cultivars as a function of growth period and manner of nitrogen fertilization. Acta Hort. 379: 205-212.10.17660/ActaHortic.1995.379.25]Search in Google Scholar
[Nilsson T. 1973. The pigment content in beetroot with regard to cultivar, growth, development and growing time and season. Swedish J. Agr. Res. 3: 187-200.]Search in Google Scholar
[PN-ISO 8586-1:1996. Analiza sensoryczna - Ogólne wytyczne wyboru, szkolenia i monitorowania oceniających - Wybrani oceniający. [in Polish]]Search in Google Scholar
[Rożek S. 2000. Czynniki wpływające na akumulację azotanów w plonie warzyw. Zeszyty Naukowe AR im. H. Kołłątaja 364: 19-31. [in Polish]]Search in Google Scholar
[Rembiałkowska E., Hallmann E., Wasiak-Zys G. 2003. Nutritive and sensory quality of tomatoes from organic and conventional cultivation. Żywienie Człowieka i Metabolizm, 30 (3/4): 893-899. [in Polish with English summary]]Search in Google Scholar
[Szafirowska A., Elkner K. 2008. Yielding and fruit quality of three sweet pepper cultivars from organic and conventional cultivation. Veget. Crops Res. Bull. 69: 135-143. [DOI: 10.2478/v10032-008-0028-x]10.2478/v10032-008-0028-x]Search in Google Scholar
[Szafirowska A., Elkner K. 2009. The comparison of yielding and nutritive value of organic and conventional pepper fruits. Veget. Crops Res. Bull. 71: 111-121. [DOI: 10.2478/v10032-009-0032-9]10.2478/v10032-009-0032-9]Search in Google Scholar
[Ugrinowić K. 1999. Effect of nitrogen fertilization on quality and yield of red beet (Beta vulgaris var. conditiva Alef.). Acta Hort. 506: 99-104.10.17660/ActaHortic.1999.506.12]Search in Google Scholar
[Wrzodak A., Elkner K. 2010. [Sensory quality of fresh and stored carrot from organic cultivation]. Nowości Warzywnicze/ Vegetable Crops News. 50: 93-101. [Polish with English summary]]Search in Google Scholar