deletions | additions       diff --git a/bibliography/biblio.bib b/bibliography/biblio.bib  index 05bd07b..72a4ec6 100644  --- a/bibliography/biblio.bib  +++ b/bibliography/biblio.bib 
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source = {Life Sci Space Res},  authors = {Trexler, PC},  author = {Trexler, PC},  year = {}, {1964},  month = {},  journal = {Life Sci Space Res},  volume = {2}, 
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source = {Environ Biol Med},  authors = {Silverman, GJ},  author = {Silverman, GJ},  year = {}, {1971},  month = {},  journal = {Environ Biol Med},  volume = {1},