I. Liepiņš

The impact of economic, social and political factors on the landscape structure of the Vidzeme Uplands in Latvia

O. Nikodemus, S. Bell, Ineta Grīne, 2005 .

Plant species richness, and Shannon diversity and evenness during secondary succession on abandoned agricultural land in Latvia

G. Brūmelis, G. Tabors, I. Liepiņš, 2001 .