We develop a basic theoretical apparatus for the search of electromagnetic neutrino interactions in experiments on elastic neutrino-nucleus scattering . Using our approach developed for the case of elastic neutrino-electron collisions in , we take into account all electromagnetic form factors of massive neutrinos  in the present treatment. In this contribution we focus on elastic neutrino-proton scattering, which can be important for studying supernova neutrinos in experiments, for example, such as JUNO . In our consideration we take into account all electromagnetic form factors not only of a neutrino, but of a proton as well.
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