doc: fix paper link apache/echarts#19231
diff --git a/_jade/components/download.jade b/_jade/components/download.jade
index 63f32b0..a173532 100644
--- a/_jade/components/download.jade
+++ b/_jade/components/download.jade
@@ -84,7 +84,7 @@
//- div(class="download-note") <i class="note-icon"><img src="./images/note.svg" /></i> Please cite the following paper whenever you use ECharts in your R&D projects, products, research papers, technical reports, news reports, books, presentations, teaching, patents, and other related intelligence activities. <br /> 当您在研发项目，研究论文，技术报告，新闻报告，书籍，演示文稿，教学，专利等中使用 ECharts 时，请引用以下论文。
//- div(class="paper-desc")
- //- a(href="http://www.cad.zju.edu.cn/home/vagblog/VAG_Work/echarts.pdf") ECharts: A Declarative Framework for Rapid Construction of Web-based Visualization
+ //- a(href="https://www.sciencedirect.com/science/article/pii/S2468502X18300068") ECharts: A Declarative Framework for Rapid Construction of Web-based Visualization
h3 方法二：从 npm 安装
p <code>npm install echarts</code>
@@ -183,7 +183,7 @@
//- ECharts: A Declarative Framework for Rapid Construction of Web-based Visualization\
//- </div>\
//- <div class="paper-author">Deqing Li, Honghui Mei, Yi Shen, Shuang Su, Wenli Zhang, Junting Wang, Ming Zu, Wei Chen.</div>\
- //- <div class="paper-journal">Visual Informatics, 2018 <a href="http://www.cad.zju.edu.cn/home/vagblog/VAG_Work/echarts.pdf">[PDF]</a></div>\
+ //- <div class="paper-journal">Visual Informatics, 2018 <a href="https://www.sciencedirect.com/science/article/pii/S2468502X18300068">[PDF]</a></div>\
//- </div>';
//- swal({
//- title: 'Notice',
diff --git a/_jade/en/index.jade b/_jade/en/index.jade
index f790487..eeaa4f4 100644
--- a/_jade/en/index.jade
+++ b/_jade/en/index.jade
@@ -114,7 +114,7 @@
h2.reveal-latest ECharts: A Declarative Framework for Rapid Construction of Web-based Visualization
p.note.reveal-latest You are welcomed to cite the following paper whenever you use ECharts in your R&D projects, products, research papers, technical reports, news reports, books, presentations, teaching, patents, and other related intelligence activities.
.single-btn-panel.reveal-latest
- a(href="http://www.cad.zju.edu.cn/home/vagblog/VAG_Work/echarts.pdf").pdf.reveal-later Visual Informatics, 2018 [PDF]
+ a(href="https://www.sciencedirect.com/science/article/pii/S2468502X18300068").pdf.reveal-later Visual Informatics, 2018 [PDF]
.icon
#paper-icon
#end-line
diff --git a/_jade/zh/index.jade b/_jade/zh/index.jade
index 1dd83f9..cb2962f 100644
--- a/_jade/zh/index.jade
+++ b/_jade/zh/index.jade
@@ -113,7 +113,7 @@
h2.reveal-latest ECharts: A Declarative Framework for Rapid Construction of Web-based Visualization
p.note.reveal-latest 如果您在科研项目、产品、学术论文、技术报告、新闻报告、教育、专利以及其他相关活动中使用了 Apache ECharts，欢迎引用本论文。
.single-btn-panel.reveal-latest
- a(href="http://www.cad.zju.edu.cn/home/vagblog/VAG_Work/echarts.pdf").pdf.reveal-later Visual Informatics, 2018 [PDF]
+ a(href="https://www.sciencedirect.com/science/article/pii/S2468502X18300068").pdf.reveal-later Visual Informatics, 2018 [PDF]
.icon
#paper-icon
#end-line
