因研究需要，请哪位大虾帮忙找这三篇文献，多谢了！

Michael Rothschild, Joseph E Stiglitz,
Increasing risk: I. A definition,
Journal of Economic Theory,
Volume 2, Issue 3,
1970,
Pages 225-243,


Michael Rothschild, Joseph E Stiglitz,
Increasing risk II: Its economic consequences,
Journal of Economic Theory,
Volume 3, Issue 1,
1971,
Pages 66-84,

Michael Rothschild, Joseph E Stiglitz,
Some further results on the measurement of inequality,
Journal of Economic Theory,
Volume 6, Issue 2,
1973,
Pages 188-204,