Mean curvature comparison for tubular hypersurfaces in Kähler manifolds and some applications
Compositio Mathematica, Tome 86 (1993) no. 3, pp. 317-335. 
@article{CM_1993__86_3_317_0,
     author = {Miquel, Vicente and Palmer, Vicente},
     title = {Mean curvature comparison for tubular hypersurfaces in {K\"ahler} manifolds and some applications},
     journal = {Compositio Mathematica},
     pages = {317--335},
     publisher = {Kluwer Academic Publishers},
     volume = {86},
     number = {3},
     year = {1993},
     mrnumber = {1219631},
     zbl = {0782.53054},
     language = {en},
     url = {http://www.numdam.org/item/CM_1993__86_3_317_0/}
}
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Miquel, Vicente; Palmer, Vicente. Mean curvature comparison for tubular hypersurfaces in Kähler manifolds and some applications. Compositio Mathematica, Tome 86 (1993) no. 3, pp. 317-335. http://www.numdam.org/item/CM_1993__86_3_317_0/

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