| C06FKF | Circular convolution or correlation of two real vectors, extra workspace for greater speed |
| C06PKF | Circular convolution or correlation of two complex vectors |
| D05BAF | Nonlinear Volterra convolution equation, second kind |
| D05BDF | Nonlinear convolution Volterra–Abel equation, second kind, weakly singular |
| D05BEF | Nonlinear convolution Volterra–Abel equation, first kind, weakly singular |