1. Wardana, F.C., N. Yamamoto and H. Kano, 2018. Analysis of technical efficiency of small-scale rice farmers in Indonesia. J. Trop. Life Sci., 8: 91-96.
2. Wardana, F.C., N. Yamamoto and H. Kano, 2017. Profitability analysis of small-scale farmers in indonesia; a case study of hand tractor usage in jember regency. Soc Sci., 12: 2224-2229.
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3. Idota, S., J. Yang, M. Tobisa, X. Li, G. Li and A. Nishiwaki et al., 2014. Relationship between soil physicochemical properties and herbage mass of alpine rangelands in southern Qinghai, China from 2004 to 2012. J. Biol. Sci., 14: 311-316.
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4. Sun, J., H. Kano, N. Yamamoto, N. Hasegawa, X. Cao and S. Hou, 2011. The effect of cooperativization of grazing and sale on improving management of pastoral farming. Eur. J. Sci. Res., 52: 170-176.
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5. Sun, J., H. Kano, N. Yamamoto, N. Hasegawa, X. Cao and S. Hou, 2011. Status and challenges of ecological pastoral farming in qinghai, china: Evaluation of initiatives in Ningxia Village. Eur. J. Sci. Res., 65: 572-580.
6. Poudel, L. Krishna, N. Yamamoto, Y. Sugimoto, A. Nishiwaki and H. Kano, 2010. Profitability and sustainability analysis of farmers managed organic coffee processsing cooperative in rural region of Nepal "jointly worked. Nepalese J. Agric. Sci., 8: 27-38.
7. Poudel, K.L., Y. Sugimoto, N. Yamamoto, A. Nishiwaki and H. Kano, 2010. Capital budgeting analysis of organic coffee production in Gulmi district of Nepal. Int. Res. J. Fin. Econ., 43: 139-148.
8. Poudel, K.L., T.G. Johnson, N. Yamamoto, S. Gautam and B. Mishra, 2010. Comparing technical efficiency of organic and conventional coffee farms in rural hill region of Nepal using data envelopment analysis (DEA) approach Organic Agric., 5: 263-275.
9. Dhungana, B., Y. Sugimoto, N. Yamamoto and H. Kano, 2010. Technical efficiency analysis of vegetable farms in the mid-hill region of Nepal-an approach using data envelopment analysis. Japan. J. Food Agric. Resour. Econ., 60: 27-37.
10. Dhungana, B., Y. Sugimoto, N. Yamamoto and H. Kano, 2010. Efficiency measurement of cardamom farms in the hilly region of nepal: A Non-parametric approach. Stud. Reg. Sci., 40: 665-678.
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11. Poudel, K.L., N. Yamamoto, Y. Sugimoto, A. Nishiwaki and H. Kano, 2009. Estimation of production function and resource use condition of organic coffee cultivation in different farm size and altitude categories in the hill region of Nepal. Eur. J. Sci. Res., 45: 438-449.
12. Morikawa And N. Yamamoto, 2009. A quantitative analysis for improvement of management of citrus tamurana hort. Bull. Fac. Agric. Univ. Miyazaki, 55: 65-73.
13. Yamamoto, N., Y. Yamane and K. Sho-Ichiro, 2007. Consumers' needs for farmers' markets and conditions for their establishment. Bull. Fac. Agric. Univ. Miyazaki, 53: 77-83.
14. Juping, Z.H.U., N. Yamamoto, K. Yukutake, S. Kobaye, X.U. Houzhi and Z.H.U. Xingjun, 2006. Economical evaluation of agro-forestry system in China -A case in siyang prefecture jiangsu province. Rev. Agric. Econ., 56: 39-49.
15. Yamamoto, N., 2005. Feasibility study for improvement of management balance of compost plant. Bull. Faculty Agric. Univ. Miyazaki, 51: 43-51.
16. Juping, Z.H.U., N. Yamamoto and S. Kobaye, 2004. Actuality analysis about of working behavior and correlative factor on household farm management in China. Rev. Agric. Econ., 55: 83-93.
17. Yamamoto, N., H. Ikumo and T. Yamaguchi, 2002. A quantitative analysis for recycling use of livestock wastes in dairy farms "jointly worked. Rev. Agric. Econ., 52: 45-58.
18. Otani, I., N. Yamamoto and S. Entsu, 2002. Effect of tree canopy on the growth of Zoysia japonica Steud. under a deciduous forest with different tree densities. Japan Agric. Res. Quart., 36: 183-187.
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19. Yamamoto, N., H. Ikumo and T. Yamaguchi, 2000. The analysis of questionaire survey about the utilization of compost in vegetable farmers "jointly worked. Japanese J. Farm Manage., 38: 121-124.
20. Yamamoto, N., S. Entsu, I. Otani And N. Koyama, 1998. Opinion to grazing on breeding farms and solutions to improve breeding at the ranges of mt.'sanbe. Japanese J. Farm Manage., 36: 99-102.
21. Tanada, M. and N. Yamamoto, 1998. Beef cattle production system by utilizing embryo transfer "jointly worked. Japanese J. Farm Manage., 36: 123-126.
22. Yamamoto, N., T. Koike, S. Entsu And I. Otani, 1997. Economic evaluation of embryo transfer on animal production "jointly worked. Bull. Chugoku Nat. Agric. Exp. Station, 17: 1-27.
23. Sho-Ichiro K., S. Fukuda and N. Yamamoto, 1991. The metrical analysis for programming of regional agriculture 2: A study on the farmer's willingness for the development of agriculture and its problem in the developing mountainous area. Bull. Faculty Agric. Univ. Miyazaki, 37: 339-348.
24. Sho-ichiro K., S. Fukuda And N. Yamamoto, 1988. The metrical analysis for programming of regional agriculture. classifications of rural communities by principal component analysis and cluster analysis. Bull. Faculty Agric. Univ. Miyazaki., 35: 195-207.