Willis T. The London practice of physic. London, England: Bassett and Crooke; 1685.

Ekbom K.A. Asthenia crurum paraesthetica (‘Irritable legs’). New syndrome consisting of weakness, sensation of cold and nocturnal paresthesia in legs, responding to certain extent to treatment with Priscol and Doryl; note on paresthesia in general. Acta Med Scand 1944; 118: 197–209.