Browsing Royal Observatory of Belgium and the Planetarium by Author "Surdej A."
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Photoelectric light curves of minor planets 599 Luisa and 128 Nemesis during the 1976 opposition
Debehogne H.; Surdej A.; Surdej J. -
Photoelectric lightcurves and rotation period of the minor planet 59 Elpis
Debehogne H.; Surdej A.; Surdej J. -
Photoelectric lightcurves of the minor planets 29 Amphitrite, 121 Hermione and 185 Eunike
Debehogne H.; Surdej A.; Surdej J.