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		Random walks on boundary for solving PDEs / K.K. Sabelfeld and N.A. Simonov. by Sabelfeld, K. K Material type: Text; Format: available online ; Literary form: Not fiction Publisher: Utrecht : VSP, 1994 Online resources: Click to View Availability: Items available for loan: Colombo (1). Jaffna (1). Kandy (1).
		Spherical means for PDEs / K. K. Sabelfeld and I. A. Shalimova. by Sabelfeld, K. K [author.] Shalimova, I. A [author.] Material type: Text; Format: available online ; Literary form: Not fiction Publisher: Utrecht, the Netherlands : VSP, 1997 Online resources: Click to View Availability: Items available for loan: Colombo (1). Jaffna (1). Kandy (1).

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