Authors: Pfalzgraf, B., Rieger, M., Ottowitz, G.
Superior Title: SAE Transactions, 1996 Jan 01. 105, 123-130.
Access URL: https://www.jstor.org/stable/44729042
Authors: Knowles, J., Lehtovaara, P., Teeri, T., Penttila, M., Salovuori, I., Andre, L.
Superior Title: Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1987 Apr . 321(1561), 449-454.
Access URL: https://www.jstor.org/stable/37791
Superior Title: SAE Transactions, 1994 Jan 01. 103, 183-196.
Access URL: https://www.jstor.org/stable/44612337