1. Research Institute for Fruit Growing Pitesti-Maracineni, 402 Marului Street, Pitesti-Maracineni, Arges 117450, Romania
2. University of Agronomic Sciences and Veterinary Medicine of Bucharest, 59 Marasti Boulevard, District 1, Bucharest 011464, Romania
3. University of Pitesti, Faculty of Sciences, Physical Education and Computer Science, 1 Targu din Vale Street, Pitesti, Arges 110142, Romania