diff --git a/pysatNASA/instruments/maven_mag.py b/pysatNASA/instruments/maven_mag.py
index a18b034c..e108c460 100644
--- a/pysatNASA/instruments/maven_mag.py
+++ b/pysatNASA/instruments/maven_mag.py
@@ -24,8 +24,8 @@
 --------
 ::
     import pysat
-    
-    
+
+
     mag = pysat.Instrument(platform='maven', name='mag')
     mag.download(dt.datetime(2020, 1, 1), dt.datetime(2020, 1, 31))
     mag.load(2020, 1, use_header = True)
diff --git a/pysatNASA/instruments/maven_sep.py b/pysatNASA/instruments/maven_sep.py
index 3bd60b27..796db117 100644
--- a/pysatNASA/instruments/maven_sep.py
+++ b/pysatNASA/instruments/maven_sep.py
@@ -27,7 +27,6 @@
     insitu = pysat.Instrument(platform='MAVEN', name='insitu')
     insitu.download(dt.datetime(2020, 1, 1), dt.datetime(2020, 1, 31))
     insitu.load(2020, 1, use_header = True)
-    
 """
 
 import datetime as dt
diff --git a/pysatNASA/instruments/methods/maven.py b/pysatNASA/instruments/methods/maven.py
index 3d27d489..e5ecb5e9 100644
--- a/pysatNASA/instruments/methods/maven.py
+++ b/pysatNASA/instruments/methods/maven.py
@@ -10,22 +10,34 @@
                     ' The Mars Atmosphere and Volatile Evolution',
                     '(MAVEN) Mission. Space Sci Rev 195, 3–48 (2015).',
                     ' https://doi.org/10.1007/s11214-015-0139-x'))
-references = ''.join(('Connerney, J., and P. Lawton, MAVEN MAG',
-                      ' PDS Archive SIS - This document ',
-                      'describes the format and content of the MAVEN',
-                      ' Magnetometer (MAG) Planetary Data System ',
-                      '(PDS) data archive. ',
-                      'It includes descriptions of the Standard',
-                      'Data Products and associated metadata, ',
-                      'and the volume archive format,',
-                      'content, and generation pipeline. ',
-                      'Connerney, J.E.P.; Espley, J.; Lawton, P.;',
-                      ' Murphy, S.; Odom, J.; Oliversen, R.;',
-                      'and Sheppard, D., The MAVEN Magnetic Field',
-                      ' Investigation, Space Sci Rev,',
-                      'Vol 195, Iss 1-4, pp.257-291, 2015. ',
-                      'doi:10.1007/s11214-015-0169-4',
-                      'Jakosky, B.M., Lin, R.P., Grebowsky, J.M. et al.',
-                      ' The Mars Atmosphere and Volatile Evolution',
-                      '(MAVEN) Mission. Space Sci Rev 195, 3–48 (2015).',
-                      ' https://doi.org/10.1007/s11214-015-0139-x'))
+refs = {'insitu': ''.join(('Jakosky, B.M., Lin, R.P., Grebowsky, J.M. et al.',
+                        ' The Mars Atmosphere and Volatile Evolution',
+                        '(MAVEN) Mission. Space Sci Rev 195, 3–48 (2015).',
+                        ' https://doi.org/10.1007/s11214-015-0139-x')),
+             'mag': ''.join(('Connerney, J., and P. Lawton, MAVEN MAG',
+                        ' PDS Archive SIS - This document ',
+                        'describes the format and content of the MAVEN',
+                        ' Magnetometer (MAG) Planetary Data System ',
+                        '(PDS) data archive. ',
+                        'It includes descriptions of the Standard',
+                        'Data Products and associated metadata, ',
+                        'and the volume archive format,',
+                        'content, and generation pipeline. ',
+                        'Connerney, J.E.P.; Espley, J.; Lawton, P.;',
+                        ' Murphy, S.; Odom, J.; Oliversen, R.;',
+                        'and Sheppard, D., The MAVEN Magnetic Field',
+                        ' Investigation, Space Sci Rev,',
+                        'Vol 195, Iss 1-4, pp.257-291, 2015. ',
+                        'doi:10.1007/s11214-015-0169-4',
+                        'Jakosky, B.M., Lin, R.P., Grebowsky, J.M. et al.',
+                        ' The Mars Atmosphere and Volatile Evolution',
+                        '(MAVEN) Mission. Space Sci Rev 195, 3–48 (2015).',
+                        ' https://doi.org/10.1007/s11214-015-0139-x')),
+             'sep': ''.join(('Larson, D.E., Lillis, R.J., Lee, C.O. et al.',
+                        'The MAVEN Solar Energetic Particle Investigation.',
+                        ' Space Sci Rev 195, 153–172 (2015).',
+                        ' https://doi.org/10.1007/s11214-015-0218-z',
+                        'Jakosky, B.M., Lin, R.P., Grebowsky, J.M. et al.',
+                        ' The Mars Atmosphere and Volatile Evolution',
+                        '(MAVEN) Mission. Space Sci Rev 195, 3–48 (2015).',
+                        ' https://doi.org/10.1007/s11214-015-0139-x'))}