By World Citizens and Endmites — Endmic Plant Species in the Kalkalpen National Park

From World Citizens and Endmites — Endmic plant species in the Kalkalpen National Park. Nature in the Upwind, National Park Kalkalpen Zeitschrift, issue 39, Spring 2002, pp. 12-13.《源自世界公民与Endmites——卡尔卡彭国家公园（Kalkalpen National Park）的特有植物物种》，刊载于《上风处的自然：卡尔卡彭国家公园期刊（National Park Kalkalpen Zeitschrift）》，第39期，2002年春季，第12-13页。