Elizabeth Costello's paper is published online by the Proceedings of the National Academy of Sciences.

VOA: standard.2010.06.30

Lubetkin's paper is published in the "American Journal of Preventive Medicine."

VOA: standard.2010.08.10

Another naturalist,Alfred Russel Wallace, had independently written a paper that contained ideas similar to Darwin's concerning evolution.

VOA: special.2009.02.25

With help from Darwin's friends, the two naturalists presented a joint scientific paper to the Linnean Society of London in July of eighteen fifty-eight.

VOA: special.2009.02.25

Historians say the first paper published by blacks in the United States was Freedom's Journal.

VOA: special.2009.04.20

Paper money was used to represent a nation's gold and silver holdings.

VOA: special.2010.06.17

For example,here in the U.S., medical records are still mostly kept on paper, and most doctors still rely more on fax than e-mail.

VOA: standard.2010.02.24

"Whether it's stage clothing, paper,concert-related memorabilia, and personally owned artifacts and objects.

VOA: standard.2010.01.07

The paper's authors tried to take into account other factors, but they admit it may not have been entirely possible to quantify differences in, for example,the recipient's health, which can be a big factor in the success of a transplant.

VOA: standard.2010.07.14