[R] Correlations in multivariate censored data

[Pierre Chanial]

Hello,

I would like to know if the following problem can be solved using the survival 
package in R.

I would like to perform a linear regression:
Z=aX + bY + c
a,b,c being constants to determine (with errors)
X,Y,Z being measurement vectors.
X     being eventually censored.

This problem has not been consistently addressed in my field (astronomy), that's 
why I need interdisciplinarity help!
(references to published and referred articles are highly welcomed)

Thank you very much for your help and attention.
Pierre Chanial

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