Comparison between some fundamental parameters of the AGBs envelopes (Ṁ, V_exp and P) and with well-known correlations found in the literature. Upper: Relationship between Ṁ and V_exp. Centre: Relationship between Ṁ and P. Lower: Relationship between V_exp and P. The colours of the markers represent the variability type. Red: semi-irregulars (SRs), green: irregulars (LB), and blue: Miras (M). The dashed line represents the linear fit performed over our sample and the solid lines represent the linear relationships for Ṁ and V_exp with P found for Mira AGBs from Vassiliadis & Wood (1993). Grey markers represent AGB stars with Ṁ and V_exp values recompiled by Van de Sande et al. (2021). The shape of the markers represents the chemistry type in the two samples: circles for O-rich AGB stars and crosses for C-rich AGB stars.