The Radio Science Bulletin June 2008 published honouring the contribution Jena made to the radio science world with her research papers published in the 1950/60s. She used the first UK general purpose stored-program computer EDSAC commissioned at Cambridge in 1949.
Jena developed the 'Haselgrove Equations' which were applied to radio propagation in the ionosphere.
References to the papers she produced whilst a research student at Cambridge:
J. Haselgrove, "Ray Theory and a New Method for Ray Tracing," Proc. Phys. Soc., The Physics of the Ionosphere, 1954, pp. 355-64.
C. B. Haselgrove and J. Haselgrove, "Twisted Ray Paths in the Ionosphere," Proc. Phys. Soc., 75, 1960, pp. 357-63.
J. Haselgrove, "The Hamilton Ray Path Equations," J. Atmos. Terr. Phys., 2, 1963, pp. 397-9.
The tribute was continued in the December edition of the Radio Science Bulletin.