Appar Tirunavukkarasar Nayanar was one of the four Saivite spiritual teachers wvho succeeded in conjuring up a tangible or substantial image of Siva in the devotee's mind through poetry.
Anusudha R. S., “Mapping The Illustration of Lord Siva as a Heroic Tamil King and God in Appar's Hymns”, Literary Endeavour , vol. IX, no. 4, pp. 292-296, 2018.