Auscher, Pascal; Hofmann, Steve; Lacey, Michael; McIntosh, Alan; Tchamitchian, Philippe (2002). "The solution of the Kato square root problem for second order elliptic operators on Rn". Annals of Mathematics. 156 (2): 633–654. doi:10.2307/3597201. JSTOR3597201. MR1933726.
Auscher, Pascal; Hofmann, Steve; Lacey, Michael; McIntosh, Alan; Tchamitchian, Philippe (2002). "The solution of the Kato square root problem for second order elliptic operators on Rn". Annals of Mathematics. 156 (2): 633–654. doi:10.2307/3597201. JSTOR3597201. MR1933726.
jstor.org
Auscher, Pascal; Hofmann, Steve; Lacey, Michael; McIntosh, Alan; Tchamitchian, Philippe (2002). "The solution of the Kato square root problem for second order elliptic operators on Rn". Annals of Mathematics. 156 (2): 633–654. doi:10.2307/3597201. JSTOR3597201. MR1933726.