Yadav, K. K.Chanchalani, K.Singh, K. K.Ghosal, B.Chandra, P.Rannot, R. C.Tickoo, A. K.Agarwal, N. K.Kothari, M.Gaur, K. K.Goyal, H. C.Goyal, A.N. KumarMarandi, P.Kaul, S. R.Dhar, V. K.Koul, M. K.Koul, R.Venugopal, K.Bhat, C. K.Chouhan, N.Borwankar, C.2019-05-232019-05-232019New Astronomy, 2019. Vol. 67: pp. 67-75http://hdl.handle.net/123456789/184845231 bytestext/htmlen(Galaxies:) BL lac objects: Individual: Mrk 421Methods: Imaging Cherenkov telescope data analysisGamma-rays: observationsArticle