4 works on record
Maitrāyaṇīya Upaniṣad with commentary of Rāmatīrtha
Saṅkṣepaśārīrakam
Ādyaśrīśaṅkarācāryaviracitaṃ Pañcīkaraṇam
The Maitri, or, Maitrāyanīya Upanishad