New Delhi: Congress president Sonia Gandhi has written letter to Delhi Chief Minister Sheila Dikshit asking for strict punishment for the guilty in the Delhi gang-rape case.Here is the full text of the letter:PromotedListen to the latest songs, only on JioSaavn.comAlso ReadDelhi Gets First Pilot Hybrid Court Room With 'Speech To Text' FacilityUttar Pradesh Gets Lucknow-State Capital Region On The Lines Of Delhi-NCRAirports Clearing Backlog After Global IT Chaos, Centre Shares An Update