فهرست مقالات Markov chain . Machine repair . Mixed spares . Time sharing . Threshold policy . Additional repairman . Queue length دسترسی آزاد مقاله صفحه چکیده متن کامل 1 - A time-shared machine repair problem with mixed spares under N-policy Madhu Jain Chandra Shekhar Shalini Shukla