@article{article,
title = {Studies of sweet cherry pruning. I. Effect of different pruning methods and dates on vegetative growth and yield of trees},
author = {},
year = {1991},
journal = {Erwerbsobstbau},
volume = {33},
number = {5},
pages = {128-132},
howpublished = "\url{https://eurekamag.com/research/002/501/002501649.php}"
}