1. Pettigrew JB. On the arrangement of the muscular fibres in the ventricles of the vertebrate heart, with physiological remarks. Philos Trans R Soc Lond. 1864;154:445–500.
2. Benninghoff A. Die Architektur des Herzmuskels. Eine vergleichend anatomische und vergleichend funktionelle Betrachtung. Morph Jarhb. 1931;67:262–317.
3. McMurrich JP, Washington CIo. Leonardo da Vinci, the anatomist (1452–1519). Vol. 411. Baltimore: Pub. for Carnegie institution of Washington by the Williams & Wilkins Company; 1930.
4. Pasipoularides A. Heart’s vortex: intracardiac blood flow phenomena. Shelton: People’s Medical Publishing House-USA; 2010. p. 119–27.
5. Lower R. Tractatus de Corde (trans: Franklin KJ). Oxford: Early Science; 1932.