message: forgot references
diff: // http://opensource.org/licenses/MIT>, at your option. This file may not be
  // copied, modified, or distributed except according to those terms.
  -//! # Argmin Steepest Descent
  +//! Steepest Descent method
  +//!
  +//! [SteepestDescent](struct.SteepestDescent.html)
  //!
  //! # References:
  //!
  @@ -89,6 +91,11 @@ use std::default::Default;
  /// # }
  /// # }
  /// ```
  +///
  +/// # References:
  +///
  +/// [0] Jorge Nocedal and Stephen J. Wright (2006). Numerical Optimization.
  +/// Springer. ISBN 0-387-30303-0.
  #[derive(ArgminSolver)]
  pub struct SteepestDescent<'a, T, H>
  where
  