-
1Argitaratua 1995“...QC 20.7 .D43 .D413...”
Conference Proceeding Liburua -
2Argitaratua 1995“...QC 611.24 .Q1...”
Conference Proceeding Liburua -
3Argitaratua 1990“...QC 173.96 .N0279...”
Conference Proceeding Liburua