Wehkamp, J.     Taking differences in institutional quality into account in global forest modelling [Текст] / J. Wehkamp, S.A. Pietsch, F. Kraxner та ін. // Systems analysis 2015 : a conf. in celebration of Howard Raiff, conf. progr., inform. and book of abstr., Nov. 11-13, 2015, Laxenburg, Austria / Intern. Inst. for Appl. Systems Analysis. — Laxenburg, 2015. — P. 67.