The experiments were performed at SPES4 (Saturne) on $^{12}$C [31] and $^{208}$Pb targets (not shown). The spectra were studied at θ =0 ◦ , the beam energies being T$_{beam}$=900*A MeV [32][34]. The reanalysis of the cross-sections on $^{12}$C target are shown in Fig. 23. FIG. 23: (Color online.) Cross-section of the $^{12}$C($^{12}$C,$^{12}$B)X reaction (insert (a)), $^{12}$C($^{12}$C,$^{12}$N)X reaction (insert (b)), and $^{12}$C($^{20}$Ne,$^{20}$F)X reaction (insert (c)). All three reactions were studied at θ = 0 $^{◦}$, and T$_{beam}$ =900*A MeV [31–34]. The three inserts (a), (b), and (c) correspond respectively to the three reactions: $^{12}$C($^{12}$C,$^{12}$B)X, $^{12}$C($^{12}$C,$^{12}$N)X, and $^{12}$C($^{20}$Ne,$^{20}$F)X. In all three cases, we observe the need to introduce the structures, in addition to the Δ peak, to describe the data which are well fitted in that case. We observe small oscillations in the three spectra, at the positions corresponding to the two first masses: M=1004 MeV ( α ) and M=1044 MeV ( β ). The $^{12}$C($^{14}$N,$^{14}$C)X reaction was studied at SPES4 (Saturne) with $^{14}$N incident beam of 880 MeV/A, and θ =0 ◦ [35]. The result of our reanalysis is shown in Fig. 24. Again, the experimental oscillations are well reproduced with the narrow structure masses. FIG. 24: (Color online.) Cross-section of the $^{12}$C($^{14}$N, $^{14}$C)X reaction studied at Saturne (SPES4) at θ = 0 $^{◦}$, and T$_{beam}$ =880*A MeV. [35]. The $^{16}$O,$^{16}$N transfer reactions were studied at Saturne (SPES4) on CH 2 and $^{12}$C targets [36]. The reanalysis of both spectra is shown in Fig. 25. C. The $^{12}$C( $^{12}$C, $^{12}$B)X reaction D. The $^{12}$C($^{14}$N,$^{14}$C)X reaction E. The p( $^{16}$O,$^{16}$N)X and $^{12}$C($^{16}$O,$^{16}$N)X reactions 16