springer.com / Reproductive indicators in natural populations of Douglas-fir in Mexico, March 2007, Volume 16, Issue 3, pp 727–742. Authors and affiliations M. Mápula-larreta, J. López-Upton, J.J.Vargas-Hernández, A. Hernández-Livera. First Online: 20 January 2007, DOI: 10.1007/s10531-005-5821-y | Anglų k.