@article {1343,
	title = {The shoot apex of Callistophyton poroxyloides},
	journal = {Contributions from the museum of paleontology, University of Michigan},
	volume = {12},
	year = {1956},
	pages = {285-299},
	chapter = {285},
	url = {http://deepblue.lib.umich.edu/bitstream/2027.42/48300/2/ID140.pdf},
	author = {Delevoryas, Theodore}
}
