Paper  doi  bibtex   

@article{blumstein_phonetic_1981,
	Author = {Blumstein, Sheila E and Stevens, Kenneth N},
	Date = {1981},
	Date-Modified = {2017-04-19 08:04:06 +0000},
	Doi = {10.1016/0010-0277(81)90021-4},
	Issn = {00100277},
	Journal = {Cognition},
	Keywords = {acoustic phonetics, invariance, phonetics, phonetic theory},
	Number = {1-3},
	Pages = {25-32},
	Title = {Phonetic features and acoustic invariance in speech},
	Url = {http://linkinghub.elsevier.com/retrieve/pii/0010027781900214},
	Volume = {10},
	Bdsk-Url-1 = {http://linkinghub.elsevier.com/retrieve/pii/0010027781900214},
	Bdsk-Url-2 = {http://dx.doi.org/10.1016/0010-0277(81)90021-4}}