Merge branch 'fsm/fourier_2' into fsm/fourier_graphics_2

Commit 446f8f4 changes the order of the parameters in generators.Recursion,
so this has to be merged and doctests have to be adapted.

src/sage/combinat/finite_state_machine.py

@@ -757,6 +757,16 @@
 :class:`FSMProcessIterator` for more information on processing and
 hooks.
 
+REFERENCES:
+
+.. [HKP2015] Clemens Heuberger, Sara Kropf, and Helmut Prodinger,
+   *Output sum of transducers: Limiting distribution and periodic
+   fluctuation*, :arxiv:`1502.01412`.
+
+.. [HKW2014] Clemens Heuberger, Sara Kropf and Stephan Wagner,
+   *Variances and Covariances in the Central Limit Theorem for the Output
+   of a Transducer*, :arxiv:`1404.3680v2`.
+
 AUTHORS:
 
 - Daniel Krenn (2012-03-27): initial version
@@ -7335,7 +7345,7 @@ def final_components(self):
 
         The final components are the only parts of a transducer which
         influence the main terms of the asympotic behaviour of the sum
-        of output labels of a transducer, see [HKP2014]_ and [HKW2014]_.
+        of output labels of a transducer, see [HKP2015]_ and [HKW2014]_.
 
         EXAMPLES::
 
@@ -7358,12 +7368,6 @@ def final_components(self):
             sage: T.final_components()[0].transitions()
             [Transition from 0 to 1: 0|-,
              Transition from 1 to 0: 0|-]
-
-        REFERENCES:
-
-        .. [HKP2014] Clemens Heuberger, Sara Kropf, and Helmut
-           Prodinger, *Asymptotic analysis of the sum of the output of
-           transducer*, in preparation.
         """
         DG = self.digraph()
         condensation = DG.strongly_connected_components_digraph()
@@ -8773,10 +8777,6 @@ def asymptotic_moments(self, variable=SR.symbol('n')):
 
         REFERENCES:
 
-        .. [HKW2014] Clemens Heuberger, Sara Kropf and Stephan Wagner,
-           *Variances and Covariances in the Central Limit Theorem for
-           the Output of a Transducer*, :arxiv:`1404.3680v2`.
-
         .. [HP2007] Clemens Heuberger and Helmut Prodinger, *The Hamming
            Weight of the Non-Adjacent-Form under Various Input Statistics*,
            Periodica Mathematica Hungarica Vol. 55 (1), 2007, pp. 81–96,