Index: trunk/doc/release.2015/ps1.detrend/Makefile
===================================================================
--- trunk/doc/release.2015/ps1.detrend/Makefile	(revision 39601)
+++ trunk/doc/release.2015/ps1.detrend/Makefile	(revision 39854)
@@ -13,5 +13,11 @@
 
 detrend.pdf: $(DETREND)
+	rm -f detrend.aux detrend.bbl detrend.blg
 	$(PDFLATEX) $<
+	bibtex detrend
+	$(PDFLATEX) $<
+	$(PDFLATEX) $<
+	$(PDFLATEX) $<
+
 #detrend.ps: $(DETREND)