Add explanatory reference to PiecewiseChebychev (Qiskit/qiskit#8393)

* Add explanatort reference to ``PiecewiseChebychev`` and update other locations with published version * fix name * Fix links Co-authored-by: Matthew Treinish <[email protected]> Co-authored-by: Matthew Treinish <[email protected]> Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>
qiskit-community · Jul 26, 2022 · ee59126 · ee59126
1 parent f584489
commit ee59126
Showing 1 changed file with 5 additions and 5 deletions.
diff --git a/qiskit_algorithms/linear_solvers/hhl.py b/qiskit_algorithms/linear_solvers/hhl.py
@@ -87,12 +87,12 @@ class HHL(LinearSolver):
     References:
 
         [1]: Harrow, A. W., Hassidim, A., Lloyd, S. (2009).
-        Quantum algorithm for linear systems of equations.
-        `Phys. Rev. Lett. 103, 15 (2009), 1–15. <https://doi.org/10.1103/PhysRevLett.103.150502>`_
+             Quantum algorithm for linear systems of equations.
+             `Phys. Rev. Lett. 103, 15 (2009), 1–15. <https://doi.org/10.1103/PhysRevLett.103.150502>`_
 
-        [2]: Carrera Vazquez, A., Hiptmair, R., & Woerner, S. (2020).
-        Enhancing the Quantum Linear Systems Algorithm using Richardson Extrapolation.
-        `arXiv:2009.04484 <http://arxiv.org/abs/2009.04484>`_
+        [2]: Carrera Vazquez, A., Hiptmair, R., & Woerner, S. (2022).
+             Enhancing the Quantum Linear Systems Algorithm Using Richardson Extrapolation.
+             `ACM Transactions on Quantum Computing 3, 1, Article 2 <https://doi.org/10.1145/3490631>`_
 
     """