Viacheslav Eremeev, Juhan Joudu, Peeter Laaniste, Erkki Maeorg, Arvo Makke, Liina Talgre, Enn Lauringson, Henn Raave and Merrit Noormets
Acta Agriculture Scandinavica Section B-Soil & Plant Science 58 ( 3 ): 236 - 244 , 2008
Peeter Laaniste, Juhan Joudu, Viacheslav Eremeev and Erkki Maeorg
Acta Agriculture Scandinavica Section B-Soil & Plant Science 58 ( 4 ): 330 - 335 , 2008