On the Iwasawa invariants of certain ℤ p -extensions
Compositio Mathematica, Tome 49 (1983) no. 2, p. 217-229 
@article{CM_1983__49_2_217_0,
     author = {Carroll, Joseph and Kisilevsky, H.},
     title = {On the Iwasawa invariants of certain $\mathbb {Z}\_p$-extensions},
     journal = {Compositio Mathematica},
     publisher = {Martinus Nijhoff Publishers},
     volume = {49},
     number = {2},
     year = {1983},
     pages = {217-229},
     zbl = {0517.12003},
     mrnumber = {704392},
     language = {en},
     url = {http://www.numdam.org/item/CM_1983__49_2_217_0}
}

Carroll, J.; Kisilevsky, H. On the Iwasawa invariants of certain $\mathbb {Z}_p$-extensions. Compositio Mathematica, Tome 49 (1983) no. 2, pp. 217-229. http://www.numdam.org/item/CM_1983__49_2_217_0/

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