GRB070103: APO SPIcam i' and z' limits. Chen, H. -W. ; Dembicky, J. ; York, D. ; Lamb, D. ; McMillan, R. ; Ketzeback, B. ; Saurage, G. Abstract Publication: GRB Coordinates Network Pub Date: 2007 Bibcode: 2007GCN..5996....1C