@article{ITA_2019__53_1-2_19_0,
     author = {Bhatia, Amandeep Singh and Kumar, Ajay},
     title = {On the power of two-way multihead quantum finite automata},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {19--35},
     publisher = {EDP-Sciences},
     volume = {53},
     number = {1-2},
     year = {2019},
     doi = {10.1051/ita/2018020},
     mrnumber = {3920825},
     zbl = {1418.81016},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1051/ita/2018020/}
}