Nirvikalpa Samadhi – Two Different Perspectives: By Dr. Harsh K. Luthar
The state of Nirvikalpa Samadhi that Sri Ramakrishna refers to and Kevala Nirvikalpa Samadhi that Ramana Maharshi refers to are two different things.Two different Samadhis.
Source: Nirvikalpa Samadhi – Two Different Perspectives: By Dr. Harsh K. Luthar