1. Kipf, T.N., Welling, M.: Semi-supervised classification with graph convolutional networks. In: ICLR (2017)
2. Dimitriadis, Y.A., Coronado, J.L.: Towards an ART based mathematical editor, that uses online handwritten symbol recognition. Pattern Recogn. 28(6), 807–822 (1995)
3. Lee, M.C.: Understanding mathematical expressions using procedure-oriented transformation. Pattern Recogn. 27(3), 447–457 (1994)
4. Zonghan, W., Shirui, P., Zhang, C.: A comprehensive survey on graph neural networks. arXiv:1901.00596v4. Accessed 4 Dec 2019
5. Mouchère, H.: ICDAR 2019 competition on recognition of handwritten mathematical expressions and typeset formula detection. In: International Conference on Document Analysis and Recognition (ICDAR) (2019)