Referee appointments for this weekend's games in the Ladbrokes Premiership, Championship, League 1 and League 2:
Ladbrokes Premiership - Friday
Partick Thistle v Aberdeen - Alan Muir (BT Sport, 7.45pm)
Ladbrokes Premiership - Saturday
Celtic v Inverness CT - Don Robertson
Dundee United v Heart of Midlothian - Kevin Clancy
Kilmarnock v Dundee - Euan Anderson
Ross County v Hamilton Academical - Greg Aitken
St Johnstone v Motherwell - Bobby Madden
Ladbrokes Championship - Saturday
Morton v Falkirk - Craig Thomson
Raith Rovers v Livingston - Willie Collum
St Mirren v Dumbarton - John Beaton
Ladbrokes Championship - Sunday
Hibernian v Alloa Athletic - Nick Walsh (Sky Sports, 1.30pm)
Queen of the South v Rangers - Stephen Finnie (Sky Sports, 4.00pm)
Ladbrokes League 1 - Saturday
Airdrieonians v Stranraer - Kevin Graham
Albion Rovers v Stenhousemuir - David Munro
Ayr United v Forfar Athletic - Gavin Duncan (BBC ALBA, 5.15pm)
Brechin City v Dunfermline Athletic - Mike Roncone
Cowdenbeath v Peterhead - Mat Northcroft
Ladbrokes League 2 - Saturday
Arbroath v Queen's Park - David Lowe
Clyde v Berwick Rangers - Mike Taylor
East Fife v Stirling Albion - Scott Millar
East Stirlingshire v Annan Athletic - Graham Beaton
Montrose v Elgin City - Steven Reid
