Duari, DebiprosadDasgupta, P.Narlikar, J. V.2012-03-082012-03-081992-01-01http://hdl.handle.net/11007/929enCosmologyObservations – galaxiesDistances and redshifts- quasarsEmission linesStatistical tests of peaks and periodicities of the observed redshift distribution of quasi-stellar objectsArticle