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Clements, Harry F. (September 1935). "Morphology and Physiology of the Pome Lenticels of Pyrus malus". Botanical Gazette. 97 (1): 101–117. doi:10.1086/334539. JSTOR2471695. S2CID84144735.
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Wetmore, Ralph H. (September 1926). "Organization and Significance of Lenticels in Dicotyledons. I. Lenticels in Relation to Aggregate and Compound Storage Rays in Woody Stems. Lenticels and Roots". Botanical Gazette. 82 (1): 71–78. doi:10.1086/333634. JSTOR2470894. S2CID83645501.
Kenoyer, Leslie A. (Dec 31, 1908 – Jan 2, 1909). "Winter Condition of Lenticels". Transactions of the Kansas Academy of Science. 22: 323–326. doi:10.2307/3624744. JSTOR3624744.
Clements, Harry F. (September 1935). "Morphology and Physiology of the Pome Lenticels of Pyrus malus". Botanical Gazette. 97 (1): 101–117. doi:10.1086/334539. JSTOR2471695. S2CID84144735.
Wetmore, Ralph H. (September 1926). "Organization and Significance of Lenticels in Dicotyledons. I. Lenticels in Relation to Aggregate and Compound Storage Rays in Woody Stems. Lenticels and Roots". Botanical Gazette. 82 (1): 71–78. doi:10.1086/333634. JSTOR2470894. S2CID83645501.
Clements, Harry F. (September 1935). "Morphology and Physiology of the Pome Lenticels of Pyrus malus". Botanical Gazette. 97 (1): 101–117. doi:10.1086/334539. JSTOR2471695. S2CID84144735.
Michael G. Andreu; Erin M. Givens; Melissa H. Friedman. "How to Identify a Tree". University of Florida IFAS extension. Archived from the original on 2013-05-14. Retrieved 2013-03-07.
Krewer, Gerard; Bertrand, Paul. "Home garden pears". CAES Publications. University of Georgia College of Agricultural and Environmental Sciences. Retrieved 18 January 2014.
Michael G. Andreu; Erin M. Givens; Melissa H. Friedman. "How to Identify a Tree". University of Florida IFAS extension. Archived from the original on 2013-05-14. Retrieved 2013-03-07.