45.　ESR measurements of (DMe-DCNQI) 2Li
T. Sakurai, H. Ohta, S. Okubo, K. Kanoda and K. Hiraki
Synthetic Metals, 120 (2001) 851-852.

46.　High field ESR measurements of Me4As[Pd(dmit)2] 2
H. Ohta, T. Sakurai, S. Okubo, R. Kato and T. Nakamura
Synthetic Metals, 120 (2001) 891-892.

47.　Fermi surface study of -(BEDT-TTF)2I3 by cyclotron resonance measurements
Y. Oshima, H. Ohta, S. Okubo, K. Koyama, M. Motokawa, M. Tamura, Y. Nishio and K. Kajita
Synthetic Metals 120 (2001) 853-854.

48.　High-field magnetooptical measurements of BEDT-TTF salts
Y. Oshima, H. Ohta, S. Okubo, K. Koyama, M. Motokawa, M. Tamura, Y. Nishio, K. Kajita
Physica B 294-295 (2001) 431-434.

49.　High field cyclotron resonance measurements of heavily doped Si:Mn
H. Ohta, S. Okubo, J. Yoshikawa, Y. Nakamura, C. Urakawa, H. Nakayama, T. Nishino
Physica B 298 (2001) 449-452.

50.　ESR Measurements of (DI-DCNQI) 2Ag Single Crystals
T. Sakurai, N. Nakagawa, S. Okubo, H. Ohta, K. Kanoda and K. Hiraki
J. Phys. Soc. Jpn. 70 (2001) 1794-1800.

51.　High-field ESR study of kagome-like substance Cu3V2O7 (OH) 2·2H2O
S. Okubo, H. Ohta, K. Hazuki, T. Sakurai, N. Kobayashi, Z. Hiroi
Physica B 294-295 (2001) 75-78.

52.　Observation of direct transition in S=1/2 quantum spin system Cu2(C5N12N2)2Cl4 by high-field ESR
H. Ohta, Y. Oshima, T. Sakurai, S. Okubo, T. Tanaka, K. Koyama, M. Motokawa, H. Kikuchi, H. Nagasawa and J. P. Boucher
J. Magn. Magn. Mater. 226-230 (2001) 439-440.

53.　Millimeter-wave ESR (electron spin resonance) measurements of frustrated system ZnCr2xGa2-2xO4
H. Ohta, S. Okubo, H. Kikuchi and S. Ono
Can. J. Phys. 79(11-12) (2001) 1387-1391.

54.　High-field AFMR measurement of Nd2BaNiO5 single crystal in the submillimeter wave region
S. Okubo, T. Yamada, H. Ohta, T. Yokoo, J. Akimitsu, H. Nojiri, M. Motokawa
Physica B 294-295 (2001) 51-54.

55.　High field ESR system and its application to the study of quantum spin systems
H. Ohta, S. Okubo, S. Kimura, T. Tanaka, H. Kikuchi and H. Nagasawa
Int. J. IRMMW 22(3) (2001) 387-391.

56.　High-field ESR measurements of a bond alternating Heisenberg chain system Ni2(μ-N3)3(dpt)2(ClO4)
H. Ohta, S. Okubo, S. Kimura, S. Takeda, H. Kikuchi, H. Nagasawa
Physica B 294-295 (2001) 55-59

57.　High-frequency ESR measurements using pulsed magnetic fields in Kobe
H. Ohta, S. Okubo, T. Sakurai, T. Goto, K. Kirita, K. Ueda, Y. Uwatoko, T. Saito, M. Azuma, M. Takano, J. Akimitsu
Physica B 294-295 (2001) 624-629.