Towards Functional-Structural Analysis of Forest Stands with LIGNUM. - Jari Perttunen; Risto Sievänen; Mika Lehtonen; Eero Nikinmaa (ESM, 2002)

Modeling the SAR response of pine forest in Southern Finland. - Mark L. Williams; Terhikki Manninen; Seppo Kellomäki; Veli-Pekka Ikonen; Risto Sievänen; Mika Lehtonen; Eero Nikinmaa; Timo Vesala (IGARSS, 2003)