--- a/align_families.xml	Thu Dec 01 23:22:52 2016 -0500
+++ b/align_families.xml	Mon Feb 06 23:39:11 2017 -0500
@@ -1,13 +1,13 @@
 <?xml version="1.0"?>
-<tool id="align_families" name="Du Novo: Align families" version="0.5">
+<tool id="align_families" name="Du Novo: Align families" version="0.6">
   <description>of duplex sequencing reads</description>
   <requirements>
     <requirement type="package" version="7.221">mafft</requirement>
-    <requirement type="package" version="0.5">duplex</requirement>
+    <requirement type="package" version="0.6">duplex</requirement>
     <requirement type="set_environment">DUPLEX_DIR</requirement>
     <!-- TODO: require Python 2.7 -->
   </requirements>
-  <command detect_errors="exit_code">python \$DUPLEX_DIR/align_families.py -p \${GALAXY_SLOTS:-1} $input &gt; $output
+  <command detect_errors="exit_code">python "\$DUPLEX_DIR/align_families.py" -p \${GALAXY_SLOTS:-1} '$input' &gt; '$output'
   </command>
   <inputs>
     <param name="input" type="data" format="tabular" label="Input reads" help="with barcodes, grouped by family"/>
@@ -25,6 +25,22 @@
       <output name="output" file="families.sort.tsv"/>
     </test>
   </tests>
+  <citations>
+    <citation type="bibtex">@article{Stoler2016,
+      author = {Stoler, Nicholas and Arbeithuber, Barbara and Guiblet, Wilfried and Makova, Kateryna D and Nekrutenko, Anton},
+      doi = {10.1186/s13059-016-1039-4},
+      issn = {1474-760X},
+      journal = {Genome biology},
+      number = {1},
+      pages = {180},
+      pmid = {27566673},
+      publisher = {Genome Biology},
+      title = {{Streamlined analysis of duplex sequencing data with Du Novo.}},
+      url = {http://www.ncbi.nlm.nih.gov/pubmed/27566673},
+      volume = {17},
+      year = {2016}
+    }</citation>
+  </citations>
   <help>
 
 **What it does**