st: conditions to use the maximum likelihood function

[amatoallah ouchen <at.ouchen@gmail.com>]

Good day stata listers,
I'm using a maximum likelihood function to estimate the parameters of
a tobit model, and I'want to know if there is any special conditions,
any trap, I'have to pay attention to, such as, the minimal
observations number?....

Thanks a lot in advance!
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