@article {kwon2007new,
	title = {New energy partitioning approach to the measurement of plane-strain fracture toughness of high-density polyethylene based on the concept of essential work of fracture},
	journal = {Engineering fracture mechanics},
	volume = {74},
	number = {16},
	year = {2007},
	pages = {2471{\textendash}2480},
	publisher = {Elsevier},
	author = {Kwon, HJ and Jar, P-YB}
}
