37.		Auxiliary apparatus : for service supervision and maintenance of transformers / ASEA
38.		ASEA's differential protection for three-phase alternators / ASEA
39.		High-speed diferential protection for large transformers / ASEA
40.		Relais temporises de precision / ASEA
41.		Technical achievements of Asea research / ASEA
42.		Cable differential protection with blocking relays type RBA 5 / ASEA
43.		Relay protection for three-phase generators and transformers in small installations / ASEA
44.		Asea [[Catálogo]] / ASEA
45.		Asea [[Catálogo]] / ASEA
46.		Imatra power plant Finland / ASEA
47.		Current transformers / ASEA
48.		Starting apparatus for three-phase motors, with squirrel cage rotors / ASEA