Punyawardena, B.V.R. and Kulasiri, D., 1998. Spatial interpolation of rainfall in the dry zone of Sri Lanka. Journal of the National Science Foundation of Sri Lanka, 26(3), pp.247–262. DOI: http://doi.org/10.4038/jnsfsr.v26i3.5007

Punyawardena BVR, Kulasiri D. Spatial interpolation of rainfall in the dry zone of Sri Lanka. Journal of the National Science Foundation of Sri Lanka. 1998;26(3):247–62. DOI: http://doi.org/10.4038/jnsfsr.v26i3.5007

Punyawardena, B. V. R., & Kulasiri, D. (1998). Spatial interpolation of rainfall in the dry zone of Sri Lanka. Journal of the National Science Foundation of Sri Lanka, 26(3), 247–262. DOI: http://doi.org/10.4038/jnsfsr.v26i3.5007

Punyawardena BVR and Kulasiri D, ‘Spatial Interpolation of Rainfall in the Dry Zone of Sri Lanka’ (1998) 26 Journal of the National Science Foundation of Sri Lanka 247 DOI: http://doi.org/10.4038/jnsfsr.v26i3.5007

Punyawardena, B.V.R., and Don Kulasiri. 1998. “Spatial Interpolation of Rainfall in the Dry Zone of Sri Lanka”. Journal of the National Science Foundation of Sri Lanka 26 (3): 247–62. DOI: http://doi.org/10.4038/jnsfsr.v26i3.5007

Punyawardena, B.V.R., and Don Kulasiri. “Spatial Interpolation of Rainfall in the Dry Zone of Sri Lanka”. Journal of the National Science Foundation of Sri Lanka 26, no. 3 (1998): 247–62. DOI: http://doi.org/10.4038/jnsfsr.v26i3.5007

Punyawardena, B. V. R.and D. Kulasiri. “Spatial Interpolation of Rainfall in the Dry Zone of Sri Lanka”. Journal of the National Science Foundation of Sri Lanka, vol. 26, no. 3, 1998, pp. 247–62. DOI: http://doi.org/10.4038/jnsfsr.v26i3.5007