TY - JOUR AU - Johannes CC. Nitsche TI - Minimal surfaces with partially free boundary JO - Annales Fennici Mathematici PY - 1971 VL - 471-500 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1971.483/ DO - 10.5186/aasfm.1971.483 LA - en ID - AFM_1971_471-500_a17 ER -