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Citation: Hb. Zhao et al., Visual observations of 1998 Leonids in Delingha and their preliminary analysis, CHIN SCI B, 45(23), 2000, pp. 2142-2147

Authors: De Lignie, MC Langbroek, M Betlem, H Spurny, P

Citation: Mc. De Lignie et al., Temporal variation in the orbital element distribution of the 1998 Leonid outburst, EARTH MOON, 82-3, 2000, pp. 295-304

Authors: Langbroek, M Roebroeks, W

Citation: M. Langbroek et W. Roebroeks, Extraterrestrial evidence on the age of the hominids from Java, J HUM EVOL, 38(4), 2000, pp. 595-600

Authors: Langbroek, M

Citation: M. Langbroek, Leonid outburst activity 1996: A broad structure and a first occurrence ofa narrow peak of fainter meteors (vol 34, pg 137, 1999), METEORIT PL, 34(3), 1999, pp. 489-489

Authors: Langbroek, M

Citation: M. Langbroek, Leonid outburst activity 1996: A broad structure and a first occurrence ofa narrow peak of fainter meteors, METEORIT PL, 34(1), 1999, pp. 137-145