Robert Wade Cole Robert I. Potter Charles C. Lin Kenneth L. Deckert Erich P. Valstyn Numerical Analysis of the Shielded Magnetoresistive Head. 551-555 1974 18 IBM Journal of Research and Development 6 db/journals/ibmrd/ibmrd18.html#ColePLDV74 http://dx.doi.org/10.1147/rd.186.0551