And those that have contended with world wars, protests, boycotts and terrorist attacks have generated substantial literature. (scientificamerican.com)
Okyanos treatment protocols are supported by substantial literature, key clinical trials and case reports leading us to see remarkable benefit in a majority of our patients. (okyanos.com)
And in looking for a dissertation topic I greatly loved the New York School, but there already was substantial literature about it. (brooklynrail.org)