1. Lubis, I. 1983.  Pengaruh pengapuran terhadap sistem perakaran jagung. Departemen Agronomi Fakultas Pertanian, Institut Pertanian Bogor.  (read)
  2. Supijatno, Hariyadi dan I. Lubis. 1986. Pengaruh salinitas terhadap pertumbuhan  bibit kelapa.  Jurusan Budi Daya Pertanian, Institut Pertanian Bogor.  (read)
  3. Lubis, I. 1991. Struktur industri pengolahan hasil tanaman kedelai di Kabupaten Bogor, Cianjur and Sukabumi, Forum Pascasarjana 14(2): 1-10.  (read)
  4. Lubis, I. 1991. Pengadaan bahan baku kedelai untuk industri pengolahan hasil tanaman kedelai di Kabupaten Bogor, Cianjur dan Sukabumi, Jurusan Budi Daya Pertanian, Fakultas Pertanian, Institut Pertanian Bogor.  (read)
  5. Lubis, I. 2003. Genotypic variation in rice yield under optimal and Sub-optimal nitrogen supply in reference to sink and source formation. Lab. Of Crop Science, Faculty of Agriculture, Kyoto University.  (read)
  6. Lubis, I., M. Ohnishi and T. Horie.  1996. Rice cultivar difference in non-structural carbohydrate content at heading stage.  In R. Ishii and T. Horie (ed.) Crop research in Asia : Achievements and perspective. Crop Science Society of Japan. P. 512-513.  (read)
  7. Lubis, I., T. Horie, M. Ohnishi and H. Takano. 1996. Rice cultivar difference in the yield as affected by sink and source size. Jpn. J. Crop Sci. 65 (extra issue 2) : 251-252.  (read)
  8. Katsura, K., I. Lubis, T. Takai, T. Horie, A. Nii, H. Yoshida and T. Shiraiwa. 2002. Identification and evaluation of major traits determining yield potential of rice under field conditions. 4. The genotypic difference in the yielding ability and associated growth characteristics. Jpn. J. Crop Sci. 71 (extra issue 2) : 12-13.  (read)
  9. Ohsumi, A., I. Lubis, T. Horie and M. Ohnishi. 2002. Identification and evaluation of major traits determining yield potential of rice under field conditions. 5. Genotypic difference in leaf photosynthetic rate and associated plant factors. Jpn. J. Crop Sci. 71 (extra issue 2) : 14-15.  (read)
  10. Lubis, I., T. Shiraiwa, M. Ohnishi, T. Horie and N. Inoue. 2003. Contribution of sink and source sizes to yield variation among rice cultivars.  Plant Prod. Sci. 6 (2) : 119-125.  (read)
  11. Katsura, K., S. Maeda, I. Lubis, T. Horie, W. Cao and T. Shiraiwa. 2008. The high yield of irrigated rice in Yunnan, China ‘A cross-location analysis’. Field Crop Res. 107(1-11).  (read)
  12. Lubis, I., H. Purnamawati, A.G. Mansyuri, S.A. Rais and T. Shiraiwa. 2008. Indonesian Peanut Cultivar Difference in Yield Performance Based on Source and Sink Characteristics. Jpn. J. Crop. Sci. 77(1) : 124-125.  (read)
  13. Purnamawati, H.,  R. Poerwanto, I. Lubis, Yudiwanti, S.A. Rais and A. Ghozi Manshuri. 2010. Akumulasi dan Distribusi Bahan Kering pada Beberapa Kultivar Kacang Tanah (Accumulation and Distribution of Plant Dry Matter in Peanut Cultivars). Indonesian Journal of Agron. XXXVIII No.2.   (read)