diff --git a/InspireXMLParser.m b/InspireXMLParser.m
index e1abcb0..c2911e4 100644
--- a/InspireXMLParser.m
+++ b/InspireXMLParser.m
@@ -35,6 +35,7 @@ -(instancetype)initWithXMLData:(NSData*)data
 {
     self=[super init];
     @autoreleasepool {
+        [data writeToFile:@"/tmp/inspireOutput.xml" atomically:NO];
         NSXMLParser*parser=[[NSXMLParser alloc]initWithData:data];
         parser.delegate=self;
         [parser parse];
diff --git a/LightweightArticle.m b/LightweightArticle.m
index c97a9f1..874d72d 100644
--- a/LightweightArticle.m
+++ b/LightweightArticle.m
@@ -106,6 +106,7 @@ -(instancetype)init{
 }
 -(void)addAuthor:(NSString *)author
 {
+    if(!author)return;
     NSMutableArray*a=dic[@"authors"];
     [a addObject:author];
 }