@article {214,
	title = {Integration of hardware and software designs for object grasping and transportation by a mobile robot with navigation guidance via a unique bearing-alignment mechanism},
	journal = {IEEE/ASME Transactions on Mechatronics},
	volume = {21},
	year = {2016},
	pages = {576-583},
	author = {J. Wu and X. Yue and W. Li}
}
@article {213,
	title = {Notion of control-law module and modular framework of cooperative transportation using multiple nonholonomic robotic agents with physical rigid-formation-motion constraints},
	journal = {IEEE Transactions on Cybernetics,},
	volume = {46},
	year = {2016},
	author = {W. Li}
}
