共 50 条
- [31] M. C. Escher's legacy: A centennial celebration MATHEMATICAL GAZETTE, 2005, 89 (514): : 135 - +
- [32] Re: Influence of the 20-week anomaly scan on prenatal diagnosis and management of fetal facial clefts. S. Ensing, C. E. Kleinrouweler, S. M. Maas, C. M. Bilardo, C. M. A. M. Van der Horst and E. Pajkrt. Ultrasound Obstet Gynecol 2014; 44: 154-159 ULTRASOUND IN OBSTETRICS & GYNECOLOGY, 2014, 44 (02) : 135 - 135
- [34] A SIMPLE PULSE-LENGTHENER CIRCUIT USING A C. M. O. S. , OR-GATE. New Electronics, 1981, 14 (21):