Kaṇṇaśśanmāruṃ Eḻuttaccanuṃ : oru upapādanaṃ - Nārāyaṇapiḷḷa, Ke. I. (SAMP early 20th-century Indian books project ;, 1937)
Study on the works of Eḻuttaccan, 16th cent., Malayalam poet.