lit review :

Lister77 : nested monitor calls
	- explains the problem
	- no solution
	- Lister : An implementation of monitors.
	- Lister : Hierarchical monitors.

Haddon77 : Nested monitor calls
	- monitors should be release before acquiring a new one.

Horst Wettstein : The problem of nested monitor calls revisited
	- Solves nested monitor by allowing barging

David L. Parnas : The non problem of nesied monitor calls
	- not an actual problem in real life

M. Joseph and VoR. Prasad : More on nested monitor call
	- WTF... don't use monitors, use pure classes instead, whatever that is

Joseph et al, 1978). 

Toby bloom : Evaluating Synchronization Mechanisms
	- Methods to evaluate concurrency