@article {ho1990positron,
	title = {Positron annihilation in positronium negative ions},
	journal = {Physics Letters A},
	volume = {144},
	number = {4},
	year = {1990},
	note = {<p>n/a</p>
},
	pages = {237{\textendash}240},
	publisher = {Elsevier},
	abstract = {<p>n/a</p>
},
	attachments = {https://labs.iams.sinica.edu.tw/project/sites/default/files/ykho/files/1990_4.pdf},
	author = {Ho, YK}
}
