Aki, E. E and A. U. Akpan-Idiok(2017). Morphological, Physico-Chemical Characteristics and Classification of Soils Developed from Quartz-Mica-Schists in Biase Local Government Area of Cross River State, Nigeria. International Journal of Scientific and Engineering Research(IJSER) Vol.8 Issue 3, ISSN-2229-5518.
S. M. Afu, I. A. Isong and E. E. Aki(2017) Variability of Selected Physic-Chemical Properties of Soil Overlying Different Parent Materials in Odukpani, Cross River State. International journal of plant and soil science, 20(6):1-14.ISSN:2320–7035.
Aki, E. E, I. E. Esu and A. U. Akpan-Idiok(2014). Pedological study of soils developed on Biotite-Hornblende-Gneiss in Akamkpa Local Government of Cross River State, Nigeria. International Journal of Agricultural Research 9(4):187-199, ISSN1816-4897. www.Academicjournals.com, Google Scholar, CABI and SCOPUS.
Esu, I. E, A. U. Akpan-Idiok, P. I. Otigbo, E. E. Aki and K. I. Ofem(2014). Characterization and classification of soils in Okitipupa Local Government Area, Ondo State, Nigeria. International Journal of Soil Science 9(1):22-36, ISSN1816-4978. DOI:3923/USS 2014.22.36 http://www.academic journals net. Google Scholar and CABI
Macauley A.I, G. A. Iwo, E. Osai and E. E. Aki(2011). Response of Soybean genotypes to Soybean Rust(Phakopsorapachyrhizi)(sydow) infection in Nigeria. Journal of Agriculture, Biotechnology and Ecology. Pg54-69, ISSN:2006-3938. Vol.4 No.3, 2011. www.Universal academic services.Org. Google Scholar;CAB.
Aki, E. E(2012). Characterization of Wetland soils developed on Limestone parent material in Cross River State, South Eastern Nigeria. Global Journal of Agricultural science, vol.11, No.1, 2012.37-44. www.globaljournal series.Com; ISSN1596-2903. Indexed and abstracted on Ajol(S.Africa) htt://wwwajol.info. Google Scholar.
Aki, E. E. and Antigha, N. R.B(2015). Some physical properties of soils overlying Limestone parent material in southeastern, Nigeria. Nigerian Journal of Soil Science, Volume 25:1-7, ISSN-1597-4488.
I. E. Esu, U. Uko and E. E. Aki(2015). Morphological, Physico-chemical and mineralogical Properties of soils developed from basalt at Ikom, Cross River State. Nigeria Journal of Soil Science,Vol.25:168-180, ISSN-1597-4488.
Aki, E. E, I. E. Esu andAkpan- Idoik(2016). Pedological Study of soils developed on Granodiorite in Biase Local Government Area of Cross River State, Nigeria. Nigerian Journal of Soil Science, Volume 26:242-253, ISSN-1597-4488.
Akpan, J. F, E. E. Aki and I. A. Isong(2017). Comparative Assessment of Wetland and Coastal Plain Soils in Calabar, Cross River State. Global Journal of Agricultural Science, Vol.(16), ISSN-1596-2903.Indexed and abstracted on Ajol(S.Africa) htt://wwwajol.infor.Google
Aki, E. E. and Akpan, J. F.(2017). Characterization and Classification of Soils derived from Granite-Mica-Schists in Akwa Ibani Akankpa Local Government Area, Cross River State. Nigeria Journal of soil and Environmental Research Vol. 15:2017,243-252.