Method for providing a perpendicular recording medium for use with a ring‐shaped recording and reproducing head

1990 ◽  
Vol 87 (4) ◽  
pp. 1836-1836
Author(s):  
Ryuji Sugita
1997 ◽  
Vol 21 (S_2_PMRC_97_2) ◽  
pp. S2_221-224 ◽  
Author(s):  
Kenya ITO ◽  
Yoshiyuki HIRAYAMA ◽  
Yukio HONDA ◽  
Masaaki FUTAMOTO

2003 ◽  
Vol 93 (10) ◽  
pp. 7453-7455
Author(s):  
P. H. W. Ridley ◽  
A. W. Spargo ◽  
G. V. Hines ◽  
G. W. Roberts

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