TY - JOUR AU - Mustăţa, Costică PY - 1975/02/01 Y2 - 2024/03/29 TI - On the best approximation in metric spaces JF - Anal. Numér. Théor. Approx. JA - Anal. Numér. Théor. Approx. VL - 4 IS - 1 SE - Articles DO - UR - https://ictp.acad.ro/jnaat/journal/article/view/1975-vol4-no1-art5 SP - 45-50 AB - Not available. ER -