diff --git a/README.rst b/README.rst
index 833eaf7..709cec6 100644
--- a/README.rst
+++ b/README.rst
@@ -1,6 +1,6 @@
-=======
-AtomNeb (IDL/GDL)
-=======
+===================
+AtomNeb IDL Library
+===================
     
 .. image:: https://travis-ci.org/atomneb/AtomNeb-idl.svg?branch=master
     :target: https://travis-ci.org/atomneb/AtomNeb-idl
diff --git a/paper/paper.bib b/paper/paper.bib
index 9dce4c6..00e1315 100644
--- a/paper/paper.bib
+++ b/paper/paper.bib
@@ -346,7 +346,7 @@ @ARTICLE{Danehkar:2018b
       eid = {899},
     pages = {899},
       doi = {10.21105/joss.00899},
-   adsurl = {http://adsabs.harvard.edu/abs/2018arXiv181201605D},
+   adsurl = {http://adsabs.harvard.edu/abs/2018JOSS....3..899D},
   adsnote = {Provided by the SAO/NASA Astrophysics Data System}
 }
 
diff --git a/paper/paper.md b/paper/paper.md
index 63fcc19..5fc4315 100644
--- a/paper/paper.md
+++ b/paper/paper.md
@@ -24,9 +24,12 @@ bibliography: paper.bib
 
 # Summary
 
-An ionized gaseous nebula can be used as an astrophysical tool to trace the chemical 
+Ionized gaseous nebulae are interstellar clouds of hydrogen-rich materials, 
+which are photo-ionized by ultraviolet radiation from stars, making them 
+visible in multi-wavelength bands. Ionized nebulae can be used as an astrophysical tool to trace the chemical 
 composition of the interstellar medium in our Galaxy and other galaxies, 
-and to study mixing processes in stellar evolution. Electron temperatures, electron densities, 
+and to study mixing processes in stellar evolution. Spectra emitted from 
+ionized nebulae generally contain collisionally excited and recombination lines. Electron temperatures, electron densities, 
 and ionic abundances can be determined from _collisionally excited lines_ (CEL) by solving statistical 
 equilibrium equations using collision strengths ($\Omega_{ij}$) and transition probabilities ($A_{ij}$) of ions. 
 Moreover, physical conditions and chemical abundances can be calculated from 
@@ -64,7 +67,7 @@ which were compiled according to the atomic data used in the FORTRAN program ``M
 the atomic data used in the Python package ``pyNeb`` for spectral analysis (@Luridiana:2015).
 
 - The API functions for the _RL atomic data_ developed in IDL were designed to provide easy access to 
-_recombination coefficients_ ($\alpha_{\rm eff}$) and _branching ratios_ ($Br$) of recombination lines 
+_effective recombination coefficients_ ($\alpha_{\rm eff}$) and _branching ratios_ ($Br$) of recombination lines 
 of given ions. The RL data include effective recombination 
 coefficients for C II (@Davey:2000), N II (@Escalante:1990), 
 O II (@Storey:1994; @Liu:1995), and Ne II (@Kisielius:1998), which were