Zyskind, George. <br/><br/>
On best linear estimation and a general Gauss-Markov theorem in linear models with arbitrary nonnegative covariance structure 

<br/><br/> Sobretiro de: SIAM. J. Applied Math. 17(6): 1190-1202, 1969 
<br/><br/><label>LCCN: </label>56761 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Programación lineal.