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A search for φ radiative decays has been performed using a data sample of about 2.0 million φ decays collected by the CMD-2 detector at VEPP-2M collider in Novosibirsk. From the selected e + e − → π + π − γ events the following results were obtained: B(φ → f 0 (980)γ) < 1 × 10 −4 for destructive and B(φ → f 0 (980)γ) < 7 × 10 −4 for constructive interference with the Bremsstrahlung process respectively, B(φ → γ → π + π − γ) < 3 × 10 −5 for E γ > 20 MeV, B(φ → ργ) < 7 × 10 −4 . From the selected e + e − → µ + µ − γ events B(φ → µ + µ − γ) = (2.3 ± 1.0) × 10 −5 has been obtained for E γ > 20 MeV. The upper limit on the P,CP-violating decay η → π + π − has also been placed: B(η → π + π − ) < 9 × 10 −4 . All upper limits are at 90% C.L.

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The choice of surgical treatment for nephrolithiasis remains a matter of debate. The article is a literature review dedicated to a comparative analysis of the efficacy and safety of extracorporeal shock-wave lithotripsy (ESWL) and endoscopic methods for the treatment of nephrolithiasis. The literature review was based on the analysis of articles published in the PubMed / MEDLINE, and eLibrary databases. Sixty publications on the topic of the review were analysed. As a result of data analysis, endoscopic therapies have a significant advantage over ESWL with comparable safety. The development and dissemination of less invasive techniques such as mini-percutaneous nephrolithotripsy and ultra-mini-percutaneous nephrolithotripsy in the future may change the approach to the surgical treatment of any form of nephrolithiasis.

The integrated luminosity ≈ 4000nb −1 of around φ meson mass (5.0× 10 6 of φ's) has been collected with the CMD-2 detector at the VEPP-2M collider. A latest analysis of the K S K L coupled decays based on 30% of available data is presented in this paper.The K S K L pairs from φ decays were reconstructed in the drift chamber when both kaons decayed into two charged particles. From a sample of 1423 coupled decays a selection of candidates to the CP violating K L → π + π − decay was performed. CP violating decays were not identified because of the domination of events with a K L regenerating at the Be beam pipe into K S and a background from K L semileptonic decays.The regeneration cross section of 110 MeV/c K L 's was found to be σ Be reg = 53 ± 17 mb in agreement with theoretical expectations. The angular distribution of K S 's after regeneration and the total cross section of K L for Be have been measured.

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