Help: which style is this one?

Does anybody know which style is:
bibliography: G. Eason, B. Noble, and I. N. Sneddon, β€œOn certain integrals of Lipschitz-Hankel type involving products of Bessel functions,” Phil. Trans. Roy. Soc. London, vol. A247, pp. 529–551, April 1955.
in text: 1-10
Thank for your help!
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