Blowup of smooth solutions for general 2-D quasilinear wave equations with small initial data

Ding, BingbingBingbingDingWitt, IngoIngoWittYin, HuichengHuichengYin2017-09-072017-09-072013https://resolver.sub.uni-goettingen.de/purl?gro-2/4280Blowup of smooth solutions for general 2-D quasilinear wave equations with small initial datapreprint1307.19783146499