@article {28743,
	title = {Combinatorial cobordism maps in hat Heegaard Floer theory.},
	journal = {Duke Mathematical Journal},
	volume = {145},
	year = {2008},
	pages = {207-247},
	url = {https://doi.org/10.1215/00127094-2008-050},
	author = {Robert Lipshitz and Ciprian Manolescu and Jiajun Wang}
}
