1. Cârdei P., Ştefan V., Popa L., Ciuperca R., (2019), Statistical models for the working process carried out by the organic fertilizer spreading machine. INMATEH Agricultural Engineering, Vol.58, Issue 2, pp.121-128, Bucharest/Romania.
2. Du W.Y., Tang S., Wang H., (2020), The status of organic fertilizer industry and organic fertilizer resources in China. Soil and Fertilizer Sciences in China, Vol.287, Issue 3, pp.210-219, Beijing / China.
3. Fang P.P., Abler D., Lin G.H., Sher A., Quan Q., (2021), Substituting Organic Fertilizer for Chemical Fertilizer: Evidence from Apple Growers in China. Land, Vol.10, Issue 8:858, Basel/ Switzerland.
4. Jiang S.T., Li H., Peng H.Y., Mei X.L., Chen T.S., Xu Y.C., Dong C.X., Shen Q.R.,(2023), Effects of partial substitution of chemical fertilizer with organic fertilizer on arbuscular mycorrhizal fungal community of Mangifera indica. Chinese Journal of Applied Ecology, Vol.34, Issue 2, pp.481-490,Shenyang / China.
5. Li J.G., Liu X.M., Zou L.L., Yin R.G., Yang K., Yuan J., (2021), Discrete Element Modeling Method and Experimental Verification of Spinach Main-root. Journal of Agricultural Mechanization Research, Vol.43, Issue 08, pp.181-185+191, Harbin/China.