latex=latex
bibtex=bibtex
dvips=dvips
pdflatex=pdflatex

these=these

.PHONY: all
all: ps pdf

.PHONY: ps pdf
ps: $(these:%=%.ps)
pdf: $(these:%=%.pdf)

$(these:%=%.pdf): %.pdf: %.tex
	$(pdflatex) $*
	$(bibtex) $*
	$(pdflatex) $*

$(these:%=%.ps): %.ps: %.tex
	$(latex) $*
	$(bibtex) $*
	$(latex) $* &&\
	$(dvips) $*.dvi -o $@