Aoyama,  H.,Mori Hiroshi,Tomitani Junichi,Ishiguro Kazuhiro,Hoshino Minoru,Kanai Kenichi ' Experimental study on placing of High-fluidity Concrete into Wall with Obstructions (Part1 Mix proportion and properties).'  MATERIALS AND CONSTRUCTION,SUMMARIES OF TECHNICAL OF ANNUAL MEETING ARCHITECTURAL INSTITUTE OF JAPAN,1997, pp.741-742