P. J. Van Heerden

Analysis of Binary Time Series in Periodic Functions

P. J. Van Heerden, 1959, IRE Trans. Electron. Comput..

Periodic Binary Time Series and Their Relation to Boolean Functions

P. J. Van Heerden, 1960, IRE Trans. Electron. Comput..

Doped Silicon and Germanium Photoconductors as Targets for Infrared Television Camera Tubes

P. J. Van Heerden, P. J. V. Heerden, R. Redington, 1959 .