page numbering : reference and appendix ( fix: same title)

the file reference.tex looks :

cleardoublepage
ihead[]{References}
bibliographystyle{alphadin}
bibliography{bibfile} 

in the main.tex, which creates a pdf:

...
input{conclusion.tex}
input{reference.tex}

appendix
part*{Appendices}

Latex builds me a pdf where :

1. The Appendix-part has the same pages-titel as References, but should be "Appendix". If I add appendix firstly and then reference, it works perfectly.
   

But the reference should be first, and then appendices. How to fix it?