Many Ramayanas:The Diversity of a Narrative Tradition in South Asia edited by Paula Richman is available online.
From google books excerpts from Questioning Ramayanas edited by Paula Richman are available. In particular, most of Velcheru Narayana Rao's "the Politics of Telugu Ramanayas: Colonialism, Print Culture, and Literary Movements" is avaible except for references which are in the translation తెలుగు రామాయణాల రాజకీయాలు: తెలుగు రామాయణాల రాజకీయాలు: బ్రిటీష్ పాలన, ముద్రణ సంస్కృతి, సాహితీ ఉద్యమాలు publishhed in EemaaTa. The first book has "A Ramayana of Their Own: Women's Oral Tradition in Telugu" by Velcheru Narayana Rao.
I came across these while trying to follow a discussion on Viswanatha Satyanarayana in దీప్తి ధార . Part of the discussion was about Viswanatha's Ramayana and Velcheru's articles seem to put it in a broader context.