I am not on site at this time so that difficult to have access to my reference data. You can search for 'Maan'. He published several papers including some in Crop Science. He was working in the US, don't remember exactly where but you should find his papers. If not please let me know. Good luck. Pierre
I have just found several of his papers when typing 'wheat male sterility SS MAAN' incl. those in Crop Science in google scholar. You should also consider the work of Tsunewaki in Japan. Plenty of interesting papers. Have fun! Pierre