GENERAL PART
SECTION TWO. PARTICIPANTS IN CRIMINAL PROCEEDINGS
CHAPTER 6. OTHER PERSONS PARTICIPATING IN CRIMINAL PROCEEDINGS
Article 66. Rights and Obligations of Witness
The witness shall have a right: to testify in his native language, if he has no or poor command of the language of the interrogation, and to use thereby the assistance of the translator/interpreter; to challenge an interpreter who participates in questioning; to testify in handwriting; to get familiarized with the minutes of evidence and to amend it; to use written notes and documents during the interrogation; to protect his interest through bringing complaints with the resolutions of the inquiry officer, investigator, prosecutor, or the findings of the courts.
The witness shall obliged: to appear when summoned by the inquiry officer, investigator, prosecutor, and the court; to report veraciously everything what he knows on the case; to answer the questions; not to disclose the circumstances of the case without the permit of the interrogator; to obey the order during the investigation and the court hearing.
If a witness fails to appear without a valid excuse, he may be subjected to compulsory appearance as envisaged by Articles 261-264 of this Code.
For giving testimony known to be false or refusing to testify, a witness shall be liable under the law.
Witnesses' rights - national proceedings
EDIT.