no. R2
Estimates for spline projections
Revue française d'automatique, informatique, recherche opérationnelle. Analyse numérique, Tome 10 (1976) no. R2, pp. 5-37. 
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     title = {Estimates for spline projections},
     journal = {Revue fran\c{c}aise d'automatique, informatique, recherche op\'erationnelle. Analyse num\'erique},
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Bramble, J. H.; Schatz, A. H. Estimates for spline projections. Revue française d'automatique, informatique, recherche opérationnelle. Analyse numérique, Tome 10 (1976) no. R2, pp. 5-37. http://www.numdam.org/item/M2AN_1976__10_2_5_0/

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