1. Dev Kumar Roy (1990). Effective Extensions of Partial Orders. Mathematical Logic Quarterly 36 (3):233-236.
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  2. Dev Kumar Roy (1985). Linear Order Types of Nonrecursive Presentability. Mathematical Logic Quarterly 31 (31‐34):495-501.
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  3. Dev Kumar Roy (1983). R.E. Presented Linear Orders. Journal of Symbolic Logic 48 (2):369-376.
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