1. On the ν - ν interaction
2. B. Pontecorvo, Communication E1-5439, Joint Institute for Nuclear Research, Dubna, Interrogatives about neutrinos;
3. D. Yu. Bardin, S.M. Bilenky, Communication E2-5881, Joint Institute for Nuclear Research, Dubna, On the K+ → μ+νμνμνμ decays.