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Stanisław Zając
Forest Research Institute, Department of Forest Resources Management, Sękocin Stary, Braci Leśnej 3, 05-090 Raszyn, Poland, fax: +48 22 7153837, phone +48 22 7150671
Adam Kaliszewski
Forest Research Institute, Department of Forest Resources Management, Sękocin Stary, Braci Leśnej 3, 05-090 Raszyn, Poland, fax: +48 22 7153837, phone +48 22 7150671,
Wojciech Młynarski
Forest Research Institute, Department of Forest Resources Management, Sękocin Stary, Braci Leśnej 3, 05-090 Raszyn, Poland, fax: +48 22 7153837, phone +48 22 7150671,