# References

Works cited throughout the [theory](../theory/index.md) pages.

```{bibliography}
:filter: cited
```

## Further reading

For an accessible derivation of the derivative curve and its shortened knot
vector, see Ching-Kuang Shene's
[Derivatives of a B-spline Curve](https://pages.mtu.edu/~shene/COURSES/cs3621/NOTES/surface/bspline-derv.html).
His [NURBS properties](https://pages.mtu.edu/~shene/COURSES/cs3621/NOTES/spline/NURBS/NURBS-property.html)
also explain local support and the role of weights.