Geodesic
Almost Curvature Continuous Fitting of B-Spline Surfaces
Journal for geometry and graphics, Tome 2 (1998) no. 1, pp. 033-044 Cet article a éte moissonné depuis la source Heldermann Verlag

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An algorithm is presented for the fitting of a tube shaped B-spline surface of (3,2) degrees to another surface along a given connection curve. Satisfying prescribed first and second order boundary conditions at a finite number of interpolation points on the connection curve several vertices of the control net of the bordering patches are computed from a fairness condition. The resulting B-spline surface joins the second surface with almost curvature continuity at those common points in which the tangent planes and the normal curvatures in one prescribed direction of both surfaces coincide. 
@article{JGG_1998_2_1_a3,
     author = {M. Szilvasi-Nagy},
     title = {Almost {Curvature} {Continuous} {Fitting} of {B-Spline} {Surfaces}},
     journal = {Journal for geometry and graphics},
     pages = {033--044},
     year = {1998},
     volume = {2},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/JGG_1998_2_1_a3/}
}
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M. Szilvasi-Nagy. Almost Curvature Continuous Fitting of B-Spline Surfaces. Journal for geometry and graphics, Tome 2 (1998) no. 1, pp. 033-044. http://geodesic.mathdoc.fr/item/JGG_1998_2_1_a3/