From 68b71121bfa78f6f1813d9dc7192ec808e007fec Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=B6nke?= <eknoes@users.noreply.github.com>
Date: Fri, 8 Jan 2016 11:53:55 +0100
Subject: [PATCH] Fixes "JanosBibliographyStyle: Do not show "In " when
 booktitle is empty "

---
 bibtexbrowser.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/bibtexbrowser.php b/bibtexbrowser.php
index ad89964..709c642 100755
--- a/bibtexbrowser.php
+++ b/bibtexbrowser.php
@@ -2181,15 +2181,15 @@ function JanosBibliographyStyle(&$bibentry) {
     $booktitle = $bibentry->getField("note");
   }
 
-  if ($type=="inproceedings") {
+  if ($type=="inproceedings" && $bibentry->hasField(BOOKTITLE)) {
       $booktitle = 'In '.$bibentry->getField(BOOKTITLE);
   }
 
-  if ($type=="incollection") {
+  if ($type=="incollection" && $bibentry->hasField(BOOKTITLE)) {
       $booktitle = 'Chapter in '.$bibentry->getField(BOOKTITLE);
   }
 
-  if ($type=="article") {
+  if ($type=="article" && $bibentry->hasField("journal")) {
       $booktitle = 'In '.$bibentry->getField("journal");
   }