RT Journal Article T1 The μ-constant stratum is not smooth A1 Luengo Velasco, Ignacio PB Springer-Verlag SN 0020-9910 YR 1987 FD 1987 LK https://hdl.handle.net/20.500.14352/64684 UL https://hdl.handle.net/20.500.14352/64684 LA eng DS Docta Complutense RD 12 abr 2025