“Summer Applications of Plant Growth Regulators, Ethephon And 1-Naphthaleneacetic Acid, Do Not Promote Return Bloom or Reduce Biennial Bearing in Seven High-Tannin Cider Apple Cultivars”. 2023. Journal of the American Pomological Society 77 (2): 75-92. https://doi.org/10.71318/apom.2023.77.2.75.