“…However, there are numerous cases when this is not the case: the mass can be consumed by an external reaction causing the surface to recede continuously, finally destroying the bridges between different parts of a particle and triggering the break up, and also, in the case of heterogeneous particles, due to explosive chemical reactions whenever the reactant is exposed either by fragmentation or by surface recession [12,17]. In both, conservative and mass loss, cases it has been observed [11,12,14,17,18,21,24] that the process can be dishonest. In most papers the analysis was carried out only for coefficients of a special form and the phenomenon was termed the "shattering fragmentation" and attributed to the phase transition and formation of a "dust" of zero-size particles (the corresponding "converse" phenomenon in the coagulation processes is called gelation and is attributed to the formation of a gel consisting of infinitely many particles).…”