Estimating multi-output production technologies

For a given firm, is it ever appropriate to estimate an independent production function for each output? For example, a university produces journal articles $A$ and services a number of students $S$ each semester:

$A_t = f(K_t,L_t,M_t)$

$S_t = f(K_t,L_t,M_t)$

If $A$ and $S$ had differing inputs, I would use SUR. Is there a standard approach to estimating multi-output production technologies $-$ maybe SEM? Thanks for any insight.