Bibliography

Ivănescu, P.

1970

[IR+70] Ivănescu P. et al.

1969

[IR+69] Ivănescu P. et al.

1968

[IR+68] Ivănescu P. et al.

1967

[IR+67] Ivănescu P. et al.

[IR+67b] Ivănescu P. et al.

[IR+67c] Ivănescu P. et al.

[IR+67d] Ivănescu P. et al.

1966

[IR+66] Ivănescu P. et al.

[IR+66b] Ivănescu P. et al.

1963

[IRR+63] Ivănescu P. et al.

[IR+63] Ivănescu P. et al.

[IRR+63b] Ivănescu P. et al.