Here are some references that may be of assistance,
Kind regards,
Paul
Pramod K Kantha (2010) Maoist – Madhesi dynamics and Nepal’s Peace Process in Mahendra Lawoti, Anup Kumar Pahari (eds) The Maoist Insurgency in Nepal: Revolution in the Twenty-first Century, Abingdon, Routledge.
Mahendra Lawoti, Susan I. Hangen (eds) (2013) Nationalism and Ethnic Conflict in Nepal: Identities and Mobilization after 1990, Abingdon, Routledge
Jason Miklian (2009) Nepal’s Terai: Constructing an Ethnic Conflict, PRIO South Asia Briefing Paper #1, International Peace Research Institute, Oslo (PRIO), http://www.ashraya-nepal.com/documents/Nepals_Terai_(South_Asia_Briefing_Paper_1).pdf
Hangen, S. (2007) The rise of ethnic politics in Nepal: Democracy in the margins, East- West Centre Washington, http://scholarspace.manoa.hawaii.edu/bitstream/handle/10125/3513/ps034.pdf
DR Dahal, CD Bhatta (2008) The relevance of local conflict resolution mechanisms for systemic conflict transformation in Nepal, Berlin: The Berghof Foundation http://www.nepaldemocracy.org/conflict_resolution/Local_Conflict_Resolution_Mechanisms.pdf
Nihar R Nayak “the Madhesi Movement in Nepal: Implications for India” – see Institute for Defence Studies and Analyses (IDSA), New Delhi http://www.idsa.in/event/MadhesiProblemandImplicationsforIndia?q=print/5364