sentences:  He wrote "Na.Pichamoorthiyin Kalai marabum manitha neyamum," a book of criticism on N.Pichamoorthi's literary works.Analysing the author's poetry and short stories in depth, Ramasamy describes how Pichamoorthi has contributed to free verse poetry with his simple words and philosophy, and defines how Pichamoorthi has set the grammar on how free verse poetry should be, in comparison to many modern poets.The book was released in April 1991 by Vanathi publications.