Referee appointments for this weekend's games in the Ladbrokes Premiership, Championship, League 1 and League 2:
Ladbrokes Premiership - Friday
Motherwell v Heart of Midlothian - Steven McLean (BT Sport, 7.45pm)
Ladbrokes Premiership - Saturday
Dundee v Celtic - Andrew Dallas (BT Sport, 12.15pm)
Hamilton Academical v Inverness CT - Barry Cook
Kilmarnock v Aberdeen - Willie Collum
Rangers v Partick Thistle - Stephen Finnie
Ross County v St Johnstone - Crawford Allan
Ladbrokes Championship - Saturday
Ayr United v Dunfermline Athletic - Don Robertson
Dumbarton v Queen of the South - Mat Northcroft
Morton v Raith Rovers - Craig Charleston
St Mirren v Falkirk - John Beaton (BBC ALBA, 5.15pm)
Ladbrokes Championship - Sunday
Hibernian v Dundee United - Craig Thomson (Sky Sports, 12 noon)
Ladbrokes League 1 - Saturday
Albion Rovers v Queen's Park - Alan Newlands
Alloa Athletic v Airdrieonians - Euan Anderson
East Fife v Stenhousemuir - Steven Reid
Peterhead v Livingston - Gavin Duncan
Stranraer v Brechin City - David Munro
Ladbrokes League 2 - Saturday
Berwick Rangers v Clyde - Greg Aitken
Cowdenbeath v Stirling Albion - Grant Irvine
Edinburgh City v Arbroath - Scott Millar
Elgin City v Annan Athletic - Kevin Graham
Forfar Athletic v Montrose - Colin Steven
