diff --git a/tools/sgwb/sgwb_astro_tool.xml b/tools/sgwb/sgwb_astro_tool.xml
index 5498802f..9b925952 100644
--- a/tools/sgwb/sgwb_astro_tool.xml
+++ b/tools/sgwb/sgwb_astro_tool.xml
@@ -9,9 +9,9 @@
     <requirement type="package" version="1.13.0">scipy</requirement>
     <requirement type="package" version="1.21.4">wget</requirement>
     <requirement type="package" version="1.2.15">oda-api</requirement>
-    <requirement type="package" version="7.16.3">nbconvert</requirement>
     <!--Requirements string 'nb2workflow[cwl,service,rdf,mmoda]>=1.3.30 
 ' can't be converted automatically. Please add the galaxy/conda requirement manually or modify the requirements file!-->
+    <requirement type="package" version="7.16.3">nbconvert</requirement>
   </requirements>
   <command detect_errors="exit_code">ipython '$__tool_directory__/${_data_product._selector}.py'</command>
   <configfiles>
@@ -92,22 +92,21 @@ bubbles of the new phase and from the turbulence that is induced by
 these collisions.
 
 The cosmological epoch of the phase transition is described by the
-temperature, :math:``T_star`` and by the number(s) of relativistic
-degrees of freedom, :math:``g_star`` that should be specified as
-parameters.
+temperature, ``T_star`` and by the number(s) of relativistic degrees of
+freedom, ``g_star`` that should be specified as parameters.
 
 The phase transition itself is characterised by phenomenological
-parameters, :math:``alpha``, :math:``beta_H`` and
-:math:``epsilon_turb``, the latent heat, the ratio of the Hubble radius
-to the bubble size at percolation and the fraction of the energy otuput
-of the phase transition that goes into turbulence.
+parameters, ``alpha``, ``beta_H`` and ``epsilon_turb``, the latent heat,
+the ratio of the Hubble radius to the bubble size at percolation and the
+fraction of the energy otuput of the phase transition that goes into
+turbulence.
 
 The tool ``Model spectrum`` outputs the power spectrum for fixed values
 of these parameters. The tool ``Phase transition parameters`` reproduces
 the constraints on the phase transition parameters from the Pulsar
-Timing Array gravitational wave detectors, reported by `Boyer &amp; Neronov
-(2024) &lt;https://arxiv.org/abs/2404.??????&gt;`__, including the estimate of
-the cosmological magnetic field induced by turbulence.
+Timing Array gravitational wave detectors, reported by Boyer &amp; Neronov
+(2024), including the estimate of the cosmological magnetic field
+induced by turbulence.
 </help>
   <citations>
     <citation type="bibtex">@article{RoperPol:2023bqa,