@article{Singh_2013,
    doi = {10.1145/2499370.2462195},
    url = {https://doi.org/10.1145%2F2499370.2462195},
    year = {2013},
    month = {jun},
    publisher = {Association for Computing Machinery ({ACM})},
    volume = {48},
    number = {6},
    pages = {15--26},
    author = {Rishabh Singh and Sumit Gulwani and Armando Solar-Lezama},
    title = {Automated feedback generation for introductory programming assignments},
    journal = {{ACM} {SIGPLAN} Notices}
}

@article{Singh_2013, doi = {10.1145/2499370.2462195}, url = {https://doi.org/10.1145%2F2499370.2462195}, year = {2013}, month = {jun}, publisher = {Association for Computing Machinery ({ACM})}, volume = {48}, number = {6}, pages = {15--26}, author = {Rishabh Singh and Sumit Gulwani and Armando Solar-Lezama}, title = {Automated feedback generation for introductory programming assignments}, journal = {{ACM} {SIGPLAN} Notices} }