Added notes

docs/src/References/@Lawn1987.md

@@ -47,6 +47,7 @@ Typical value of surface tension are generally around $24-38\times{}10^{-3}\:N\c
 
 Combustion characteristics in general: maximum droplet heating rate around $10^5\:{}K\cdotp{}s^{-1}$ and flame temperatures of $2120\:{}K$, with a fuel residence time $<2\:{}s$. Droplets are generally injected from fractions of micron to $500\:{}\mu{}m$. The mechanism of combustion generally happens as follows:
 
-1. Volatiles phase: occurs between 250-350 °C and is characterized by the formation of a volatiles shell around the droplets, giving an aspect of granularity. It evolves till the unset of boiling, which occurs quite sharply somewhere in range 300-400 °C. Boiling leads to distortion and swealing, favoring breakup.
+1. Volatiles phase: occurs between 250-350 °C and is characterized by the formation of a volatiles shell around the droplets, giving an aspect of granularity. It evolves till the unset of boiling, which occurs quite sharply somewhere in range 300-400 °C. Boiling leads to distortion and swealing, favoring breakup; several ejections might occur at this stage. The competing mechanisms during this phase are distillation and pyrolysis; the fuel composition and heating rate will determine the prevailing one.
 2. 
 
+See figures 8-9 of reference for more details regarding droplet history.