01398nam a2200385 i 450099100132100970753620020507191315.0940728s1985 us ||| | eng 0273086456b10831198-39ule_instLE01310473ExLDip.to Matematicaeng515.353AMS 35D99AMS 35G10AMS 35G15AMS 35JAMS 35L55AMS 35M05 (1985)QA377Hua, Loo-Keng346087Second-order systems of partial differential equations in the plane /Hua Loo Keng, Lin Wei, Wu Ci-QuianBoston :Pitman Publishing,1985291 p. :ill. ;24 cm.Pitman research notes in mathematics series, ISSN 02693674 ;128Includes bibliographiesPartial differential equationsLin, Weiauthorhttp://id.loc.gov/vocabulary/relators/aut736504Wu, Ci-Quian.b1083119823-02-1728-06-02991001321009707536LE013 35J HUA11 (1985)12013000002019le013-E0.00-l- 01010.i1093996928-06-02Second-order systems of partial differential equations in the plane1455966UNISALENTOle01301-01-94ma -engus 01