PP 453-7; 4aSG 49-50; TSB 188.3
TSB 84
AH 326; PP 457
AA 316; GC 529-30; PP 451, 457, 461, 487, 492, 518, 684; PK 294; 5T 598-9
3SM 261, 388.2
5T 598-9