Reference
Franci Stampar, Metka Hudina, Valentina Usenik, Karla Sturm, Mojka Mirscek-Marn, Franc Batic (1999): Influence of Leaf Area on Net Photosynthesis, Yield and Flower-Bud Formaiton in Apple (Malus domestica Borkh.). – Phyton, Annales Rei Botanicae, Horn – 39_3: 101 - 106.