In this talk I briefly discuss the present status of models of neutrino mixing with particular emphasis on the concept of Bimaximal Mixing.
Two versions of particular GUT models based on SU(5) and on SO(10) are analysed.
Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.