Geodesic
On calculation of scalar products of $B$-splines
Sibirskij žurnal vyčislitelʹnoj matematiki, Tome 9 (2006) no. 1, pp. 55-61.

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The paper is devoted to algorithms of stable calculation of scalar products of $B$-splines. A new modification of recursive calculations of integrals in the Gram matrix is proposed. The modified algorithm is nearly two times faster than the Gauss quadratures and the full recursion algorithm. 
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A. I. Rozhenko. On calculation of scalar products of $B$-splines. Sibirskij žurnal vyčislitelʹnoj matematiki, Tome 9 (2006) no. 1, pp. 55-61. http://geodesic.mathdoc.fr/item/SJVM_2006_9_1_a5/

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