Rule-based machine translation between Bulgarian and Macedonian Tihomir Rangelov author 2011-jan 20-21 text Proceedings of the Second International Workshop on Free/Open-Source Rule-Based Machine Translation Felipe Sánchez-Martinez editor Juan Antonio Pérez-Ortiz editor Barcelona, Spain conference publication rangelov-2011-rule https://aclanthology.org/2011.freeopmt-1.9/ 2011-jan 20-21 53 60