add other publications

README.md

@@ -74,6 +74,11 @@ If you use ThunderSVM in your paper, please cite our work ([preprint now availab
  year = {2018}
 }
 ```
+
+## Other publications
+* Zeyi Wen, Jiashuai Shi, Bingsheng He, Yawen Chen, and Jian Chen. Efficient Multi-Class Probabilistic SVMs on GPUs. IEEE Transactions on Knowledge and Data Engineering (TKDE), 2018.
+* Zeyi Wen, Bingsheng He, Kotagiri Ramamohanarao, Shengliang Lu, and Jiashuai Shi. Efficient Gradient Boosted Decision Tree Training on GPUs. The 32nd IEEE International Parallel and Distributed Processing Symposium (IPDPS), pages 234-243, 2018.
+
 ## Related websites
 * [LibSVM](https://www.csie.ntu.edu.tw/~cjlin/libsvm/) | [SVM<sup>light</sup>](http://svmlight.joachims.org/) | [OHD-SVM](https://github.com/OrcusCZ/OHD-SVM) | [NVIDIA Machine Learning](http://www.nvidia.com/object/machine-learning.html)