To go straight for the minimal surface equation you need to see the paper by Leon Simon "On a theorem of De Giorgi and Stampacchia".
If you want Minimal surface system then see Harvey and Lawson: "Extending minimal varieties"
To go straight for the minimal surface equation you need to see the paper by Leon Simon "On a theorem of De Giorgi and Stampacchia".
If you want Minimal surface system then see Harvey and Lawson: "Extending minimal varieties"