author: 
year: 
title: 
publisher:
uri:
pubtype: article
discipline:

country:
period:
maxlength:
targeting:
group:
data:

design:
method:
sample:
unit:
representativeness:
causal: # 0 correlation / 1 causal

theory:
limitations:
observation:
  - intervention:
    institutional:
    structural:
    agency:
    inequality:
    type: # 0 vertical / 1 horizontal
    indicator: # 0 absolute / 1 relative
    measures:
    findings:
    channels:
    direction: # -1 neg / 0 none / 1 pos
    significance: # 0 nsg / 1 msg / 2 sg

notes:
annotation: |