OICC Press Journal of Theoretical and Applied Physics 2251-7235 9 1 2023 11 17 A short review about some exotic systems containing electrons, muons, and tauons 10.1007/s40094-014-0154-4 EN OICC Press Authors Various OICC Press Authors Journal Article 2023 11 17 AbstractSome remarks about exotic systems consisting of various masses of fermions and antifermions have been presented. In paricular, few body systems containing electrons, muons and tauons, and the fundamental interest of the study of their bound states systems have been discussed.