What solutions are there against deep stalls? What solutions are there against deep stalls?

According to SKYbrary:


  Aircraft with a T-tail design are often configured with a Stick Pusher system to help prevent the mainplane angle of attack from reaching a value that could result in a Deep Stall.


Are there other solutions?
The Airbus A400M military transport was equipped with a rocket engine pointing downward which could produce a 5-second burn during testing of deep stall characteristics. It isn’t standard equipment though.