1. International Patent, Publication No. CA2371210: Process for the preparation of pharmaceutical grade Gabapentin.
2. U.S. Patent 4642375: Process for preparing derivatives of the monoamide of terephthalic acid.
3. U.S. Patent 4221814: Terephthalic acid monoamide derivatives, process for preparing the same, and an anti-allergic agent prepared from the same.
4. Hydrophobic tartaric acid monoamides as complexing and tensioactive agents