RT Journal Article T1 On smooth surfaces in GR (1,P3) with a fundamental curve A1 Arrondo Esteban, Enrique A1 Gross, Mark PB Spirnger SN 0025-2611 YR 1993 FD 1993-04-03 LK https://hdl.handle.net/20.500.14352/57184 UL https://hdl.handle.net/20.500.14352/57184 NO CAICYT NO North Atlantic Treaty organization DS Docta Complutense RD 3 may 2024