Ataç, T., “Relation of the Fluctuations of Some of the Solar Activity Indexes”, Astrophysics and Space Science, 153, 1, 173-176, 1989. Dil Türkçe
Şeker, S.Ş., “Radio Pulse Transmission Along Mixed Paths in a Stratified Forest”, IEE Proceedings-H Microwaves Antennas and Propagation, 136, 1, 13-18, 1989. Dil Türkçe
Aktulga, E., Çil, C.Z., Aktaş, G., “Phase Shift Analysis of Modulated Photocurrent a New Approach to Determining the Energy Scale”, Applied Physics A-Materials Science & Processing, 48, 6, 517-520, 1989. Dil Türkçe
Özgüç, A., Ataç, T., “Periodic Behavior of Solar Flare Index During Solar Cycle-20 and Cycle-21”, Solar Physics, 123, 2, 357-365, 1989. Dil Türkçe
Brown, D.B., Hemami, H., Istefanopulos, Y., “Online Exploration of an Unknown Surface by a Robotic Probe”, Journal of Robotic Systems, 6, 5, 521-543, 1989. Dil Türkçe
Sarptürk, S.Z., Istefanopulos, Y., “On the Stability of Discrete Time Sliding Mode Control Systems Reply”, IEEE Transactions on Automatic Control, 34, 9, 1022-1022, 1989. Dil Türkçe
Ataç, T., “On the Short Term Variations of Solar Activity During Solar Cycle-21”, Earth Moon and Planets, 47, 2, 165-170, 1989. Dil Türkçe
Özgüç, A., “On the Longitudinal Distribution of the Solar Surges”, Solar Physics, 123, 2, 381-383, 1989. Dil Türkçe
Pym, J., Ülger, A., “On the Arens Regularity of Inductive Limit Algebras and Related Matters”, Quarterly Journal of Mathematics, 40, 157, 101-109, 1989. Dil Türkçe
Karasu, I., Özekici, S., “Nbue and Nwue Properties of Increasing Markov Processes”, Journal of Applied Probability, 26, 4, 827-834, 1989. Dil Türkçe
