@article{weko_830_1, author = "Chen,Yi-Chao and Fosdick,Roger and Fried,Eliot", title = "Isometric deformations of unstretchable material surfaces, a spatial variational treatment", journal = "Journal of the Mechanics and Physics of Solids", year = "2018", volume = "116", number = "", pages = "290--322", month = "mar" }