See: Conservation in the United Kingdom
Argyll and Bute
Scottish Borders
City of Aberdeen
City of Dundee
Dumfries and Galloway
Edinburgh
Fife
City of Glasgow
Highland
East Lothian
Perth and Kinross
East Renfrewshire
... terms of the coefficients a, b and c, which are assumed to be real (but see below for generalizations) with a being non-zero. ...