File list (Check if you may need any files):
psat toolbox\@stsp
............\.....\add_in.m
............\.....\add_out.m
............\.....\combine_in.m
............\.....\contents.m
............\.....\cpc_stsp.m
............\.....\display.m
............\.....\dompole.m
............\.....\dstate.m
............\.....\eig.m
............\.....\eq.m
............\.....\eval.m
............\.....\exres.m
............\.....\fb_aug.m
............\.....\fr_mstsp.m
............\.....\fr_stsp.m
............\.....\full.m
............\.....\get.m
............\.....\init_stsp.m
............\.....\inv.m
............\.....\minus.m
............\.....\nlsr.m
............\.....\norm_copr.m
............\.....\order_in.m
............\.....\order_out.m
............\.....\order_st.m
............\.....\parallel.m
............\.....\parin.m
............\.....\plus.m
............\.....\power.m
............\.....\randres.m
............\.....\reduss.m
............\.....\residue.m
............\.....\response.m
............\.....\rtlocus.m
............\.....\sdecomp.m
............\.....\sparse.m
............\.....\sresid.m
............\.....\stabred.m
............\.....\stack.m
............\.....\stepres.m
............\.....\stsp.m
............\.....\stsp2ss.m
............\.....\stsp2sys.m
............\.....\subsasgn.m
............\.....\subsref.m
............\.....\sum_in.m
............\.....\sum_out.m
............\.....\sysbal.m
............\.....\times.m
............\.....\tr_stsp.m
............\.....\transpose.m
............\.....\uminus.m
............\.....\vertcat.m
............\.....\zeros.m
............\linalpst.zip
............\linalpst
............\........\Linalpst.doc
............\pstdat.zip
............\pstdat
............\......\d19k.m
............\......\d2adce.m
............\......\d2adcensvc.m
............\......\d2aem.m
............\......\d2asb.m
............\......\d2asbe.m
............\......\d2asbeg.m
............\......\d2asbegh.m
............\......\d2asbeghp.m
............\......\d2asbegmm.m
............\......\d2asbegp.m
............\......\d2asbegpindmotorrogers.m
............\......\d2asbep.m
............\......\d2asbesdc.m
............\......\d2asbg.m
............\......\d2asbgh.m
............\......\d2atra.m
............\......\d3asbep.m
............\......\d3gen.m
............\......\d3m9bm.m
............\......\da3m9bst.m
............\......\data16em.m
............\......\data16m.m
............\......\data3m9b.m
............\......\data3mIg.m
............\......\data48em.m
............\......\data50m.m
............\......\dataimrn.m
............\......\dataimstart.m
............\......\dataimstrn.m
............\......\datane.m
............\......\datanp48.m
............\......\datasmib.m
............\......\dtestdc.m
............\......\dtestdcr.m
............\PSTMan.pdf
............\PSTMan.zip
............\pstv3.zip
............\StateSpace.pdf
............\statespace.zip