TY - JOUR AU - William E. Lang TI - Extremal rational elliptic surfaces in characteristic p. I. Beauville surfaces. JO - Mathematische Zeitschrift PY - 1991 SP - 429 EP - 438 VL - 207 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZ_1991__207_2_174281/ ID - MZ_1991__207_2_174281 ER -