Some balanced repeated measurements designs

Methods of constructing some Balanced Repeated Measurements Designs (RMD) are given. We consider a balanced RMD [ t , t ( t − 1 ) , 3 ] t being any positive integer (prime or non-prime). Using this method, an unsolved balanced RMD ( 6 , 30 , 3 ) is constructed. A method for constructing RMD [ t , t ( t − 1 ) , t − 1 ] , t being any odd integer, is given.